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stat222 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/222.png | As shown in the line chart depicting the profit trends of Company A and Company B, which company's profit growth rate has been faster in recent years (choose 'A' or 'B')? | A | NULL | free_form |
stat229 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/229.png | A shooting team plans to select one athlete from Athlete A, Athlete B, and Athlete C to participate in a shooting competition. During the selection process, each athlete shoots 10 times, and their average scores and variances are calculated as shown in the table. The shooting team decides to base the selection on their average scores and stability indicators. Which athlete will be selected? | Athlete C | NULL | free_form |
stat23 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/23.png | Life lies in movement. Movement penetrates every corner of life, and the advantage of movement is that it keeps our bodies in a healthy state. Xiaoming used a mobile app to record the number of steps he walked daily (unit: ten thousand steps) in November and drew a statistical chart from the records. In this set of data representing the number of steps walked each day, the median is ______ ten thousand steps. | 1.3 | NULL | free_form |
stat238 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/238.png | As shown in the figure, two freely rotating disks are used in a 'create purple' game. If one disk lands on red and the other lands on blue, then purple is created. What is the probability of creating purple? | 1/2 | NULL | free_form |
stat241 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/241.png | Our city is hosting a Beautiful Countryside Achievements Exhibition at a certain exhibition hall. The entrance diagram of the exhibition hall is shown in the figure. The probability of Xiaoying entering through entrance A and exiting through exit E is ________. | 1/6 | NULL | free_form |
stat245 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/245.png | As shown in the figure, a shopping mall created two statistical charts based on sales data from January to April 2023. The sales of home appliances in March are ______ compared to the sales of home appliances in April (fill in 'greater than', 'less than', or 'equal to'). | less than | NULL | free_form |
stat247 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/247.png | In an opaque box, there are black and white balls in equal quantities. Xiaoying conducts an experiment where she mixes the balls in the box, randomly draws one ball, notes its color, and then puts it back into the box, repeating this process continuously. The frequency line chart for 'drawing a white ball' is shown in the figure. When the number of draws is sufficiently large, estimate the probability of drawing a white ball (rounded to 0.1). | 0.5 | NULL | free_form |
stat249 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/249.png | Xiao Ming hangs a regular octagonal cardboard as shown in the figure on the wall to play dart games (each dart always lands on the cardboard, and every point on the cardboard has an equal chance to be hit). What is the probability of the dart landing in the shaded area? | 1/2 | NULL | free_form |
stat25 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/25.png | The diagram below shows the results of a cumulative experiment simulating the random tossing of a coin using a computer. As the number of experiments increases, the frequency of 'pointing up' oscillates around a certain number, showing a certain stability. It can be estimated that the probability of 'pointing up' is ____________. | 0.618 | NULL | free_form |
stat252 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/252.png | On May 30, 2023, which marks the 7th National Science and Technology Workers' Day, a hand-drawn science knowledge poster competition was held in a middle school. A total of 100 works won first, second, third prizes, and excellence awards. According to the winning results, a bar chart was drawn as shown. If the award-winning works are represented as proportions in a pie chart, what is the central angle of the sector corresponding to the 'Second Prize'? ______°. | 108 | NULL | free_form |
stat256 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/256.png | As shown in the figure, in △ABC, △BEF is shaded, where points D, E, and F are the midpoints of BC, AC, and AB, respectively. If a point is randomly selected within △ABC, what is the probability that the point falls in the shaded region? | 1/4 | NULL | free_form |
stat262 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/262.png | The chart shows the sales figures for Brand A and Brand B washing machines from 2018 to 2022. From the chart, it can be observed that the brand with faster sales growth is ___________ (fill in either 'A' or 'B'). | A | NULL | free_form |
stat265 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/265.png | As shown in the figure, it is a line chart of the sales of a supermarket from August to December this year. Based on the information in the chart, the sales of the month with the highest sales exceed the sales of the month with the lowest sales by _____ million yuan. | 15 | NULL | free_form |
stat266 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/266.png | There is a lottery activity with first, second, third prizes, and a consolation prize. The lottery method involves spinning a circular turntable as shown in the figure. The result is determined by the area pointed to by the pointer (the turntable is evenly divided into four areas of equal size, and if the pointer points to a boundary line, it is re-spun). The probability of the participant only winning the consolation prize is ___________. | 1/4 | NULL | free_form |
stat269 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/269.png | As shown in the figure, in a circular turntable, the probability that the pointer lands exactly in the shaded area when it spins is 1/4. What is the central angle of the shaded area? | 90° | NULL | free_form |
stat272 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/272.png | As shown in the diagram, it is a schematic of the Minesweeper game. Clicking the middle button reveals the number 6, indicating that there are 6 mines in the 8 positions surrounding the number 6. If you randomly click one of these 8 buttons, the probability of encountering a mine is __________. | 3/4 | NULL | free_form |
stat287 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/287.png | To promote traditional Chinese culture and enhance students' knowledge of poetry, a school organized a poetry recitation competition. Class 9(2) needs to select one of two students, A or B, to participate in this event. The following chart shows the selection test scores of students A and B over six rounds. It is known that the average scores of both students are equal. Considering their stability, which student should be chosen to participate in the competition? (Fill in 'A' or 'B') | B | NULL | free_form |
stat292 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/292.png | Spin the wheel shown in the figure once. When the wheel stops, there are the following events: ① The pointer falls in the region marked with the number 6; ② The pointer falls in the region marked with multiples of 2; ③ The pointer falls in the region marked with multiples of 3. Among these events, the one with the greatest likelihood is ________. (Fill in the serial number) | ② | NULL | free_form |
stat298 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/298.png | The Hong Kong International Cricket Sixes is a major event in international cricket. In one match, the heights of players from Team A and Team B were recorded, as shown in the graph. Which team's players have more consistent heights? (Answer with 'Team A' or 'Team B'.) | Team B | NULL | free_form |
stat302 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/302.png | As shown in the figure, this is the sales volume situation of two models of new energy vehicles, Model A and Model B, from 2019 to 2023 in a certain company. From the figure, it can be concluded that the model with faster sales growth is _______ (fill in 'Model A' or 'Model B'). | Model A | NULL | free_form |
stat310 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/310.png | The fruit sales in this supermarket in October 2022 ______ the fruit sales in November 2022 (fill in '>' or '='). | > | NULL | free_form |
stat316 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/316.png | There are four different opaque cards of the same size with the same back. The front side of these cards shows the 4 patterns below. The cards are shuffled face down, and one card is randomly drawn. The probability that the pattern on the front of the drawn card is an axisymmetric figure is ______. | 3/4 | NULL | free_form |
stat317 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/317.png | As shown in the figure, the diagonal lines AC and BD of □ABCD intersect at point O, and EF and GH pass through O. E and H are on side AB, while G and F are on side CD. What is the probability of a dart landing exactly in the shaded area if it is thrown randomly within □ABCD? | 1/4 | NULL | free_form |
stat327 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/327.png | The math teacher assigned 10 multiple-choice questions as classroom exercises, and the research representative created a bar chart to display the results of the entire class's performance. Based on the information in the chart, the median of the number of questions correctly answered by all students in the class is ______ questions. | 9 | NULL | free_form |
stat34 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/34.png | As shown in the figure, inside a square with a side length of 2, there is a smaller square with a side length of 1. A frog jumps randomly within this figure. What is the probability that the frog lands in the shaded area? | 3/4 | NULL | free_form |
stat342 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/342.png | As shown in the figure, to measure the area of an irregular region (shaded area) on a flat ground, a square with an area of 4m² is drawn outside the irregular region. Randomly throwing small balls into the square (assuming that each point inside the square is equally likely for the balls to land), after a large number of repeated experiments, it is found that the frequency of the balls landing in the irregular region stabilizes at 0.4. Based on this, the estimated area of the irregular region is ________ m². | 1.6 | NULL | free_form |
stat346 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/346.png | As shown in the figure, in △ABC, points D, E, and F are the midpoints of AB, AC, and BC, respectively. If a grain of rice is randomly thrown into △ABC, the probability of the grain landing in the shaded area is _________ | 1/4 | NULL | free_form |
stat374 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/374.png | To implement the 'Environmental Protection Declaration,' a school held a themed speech contest for primary and middle school students. The graph shows the scores given by 7 judges to two contestants, A and B. From the line graph, it can be observed that the 7 judges gave more consistent evaluations to contestant ________ in the speech contest. (Answer 'A' or 'B') | B | NULL | free_form |
stat380 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/380.png | Draw line charts for two groups of data, Group A and Group B, each containing 10 data points (as shown in the figure). The mean of both groups is 7. Let the variances of Group A and Group B be denoted as S_A² and S_B², respectively. Then S_A² <> S_B² ('>' or '<'). | < | NULL | free_form |
stat383 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/383.png | As shown in the diagram, a rectangular dartboard ABCD has diagonals AC and BD intersecting at point O. Line EF is drawn through point O, intersecting sides AD and BC at points E and F, respectively. Assume that every point on the dartboard is equally likely to be hit by a dart (if the dart hits the boundaries of the triangles or misses the dartboard, it is regarded as a re-throw). If one dart is randomly thrown at the dartboard, what is the probability of hitting the shaded region? | 1/2 | NULL | free_form |
stat39 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/39.png | A middle school held a 'Sunshine Sports Activity,' and all ninth-grade students from Class One participated in activities involving square dancing, table tennis, and basketball at 6 PM on April 18, 2019. At this time, Teacher Wang collected statistics on the number of students engaged in these three activities and created a pie chart and a bar chart based on this data. Based on the two charts, how many students were participating in the table tennis activity at this time? | 15 | NULL | free_form |
stat396 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/396.png | As shown in the figure, it is the entrance of a cinema, which has 3 ticket-checking gates. If Wang Lin and Li Hua randomly choose one gate to enter the cinema, what is the probability that both enter through the same gate? | 1/3 | NULL | free_form |
stat408 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/408.png | To implement the 'Double Reduction' policy, the school randomly surveyed some students about their average daily sleep duration over a week. The statistical results are shown in the graph. What are the mode and median of the sleep durations among these surveyed students? ( ) | A. 8, 9 | ['8, 9', '8, 8.5', '16, 8.5', '16, 14'] | multi_choice |
stat41 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/41.png | As shown in the line chart, which displays the sales revenue growth of Company A and Company B over the past few years, the company with the faster growth in sales revenue is ________. | Company A | NULL | free_form |
stat411 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/411.png | Xiao Ming hangs a 3×3 square grid board on the wall to play darts (each dart equally likely lands on any point of the board), as shown in the figure. What is the probability that the dart lands in the shaded area ( )? | B | ['5/9', '4/9', '1/2', '3/5'] | multi_choice |
stat412 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/412.png | In a shooting competition, the scores of a certain player in 10 shots are as shown in the figure. Which of the following conclusions is incorrect? ( ) A. The mean is 9 rings B. The median is 9 rings C. The mode is 9 rings D. The variance is 0.8 | D | ['The average score is 9 rings', 'The median score is 9 rings', 'The mode is 9 rings', 'The variance is 0.8'] | multi_choice |
stat419 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/419.png | Given the natural population growth rate, birth rate, and death rate, which of the following judgments is incorrect?
A. Compared to 2012, the birth rate in 2021 has dropped by nearly half
B. The death rate has remained basically stable over the past ten years
C. The total population has been continuously declining over the past five years
D. The natural population growth rate has been continuously declining over the past five years | C | ['Compared to 2012, the birth rate in 2021 has dropped by nearly half.', 'The death rate of the population has remained basically stable in the past decade.', 'The total population growth rate has declined in the past decade.', 'The natural population growth rate has continued to decline in the past decade.'] | multi_choice |
stat420 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/420.png | A dart is randomly thrown onto the regular hexagonal dartboard shown in the figure. If each point on the dartboard is equally likely to be hit, what is the probability of the dart landing in the shaded region? | B | ['1/4', '1/3', '1/2', '√3/3'] | multi_choice |
stat438 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/438.png | The gender of a human is determined by a pair of sex chromosomes (X, Y). When the chromosomes are XX, the individual is female; when the chromosomes are XY, the individual is male. The diagram shows the genetic map of the sex chromosomes for a couple. If this woman becomes pregnant, what is the probability that the child will be a girl? | C | ['1/4', '1/3', '1/2', '3/4'] | multi_choice |
stat454 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/454.png | The vision status of ninth-grade students at a school is shown in the chart. If there are 80 students with moderate myopia, how many students have mild myopia? | C. 120 students | ['40 students', '108 students', '120 students', '160 students'] | multi_choice |
stat463 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/463.png | It is known that the histogram below shows the distribution of the money raised by 200 ninth-grade students from a charity sale in a certain school. What is the group frequency for the 0–40 yuan interval (0-40 yuan)? | B | ['1/4', '2/5', '5/6', '7/8'] | multi_choice |
stat467 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/467.png | To encourage students to read more, a school launched the 'Book Aroma Campus' activity. The diagram shows the reading statistics (in books) of extracurricular books for a semester taken by the class leader of a certain class of 50 students. What are the median, mode, and mean of the number of books read by these 50 students? | C | ['18, 12, 12', '12, 12, 12', '15, 12, 14.8', '15, 10, 14.5'] | multi_choice |
stat471 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/471.png | As shown in the figure, the area ratio of four sectors A, B, C, and D is 1:2:3:4. What is the central angle of sector D in degrees? | C | ['54°', '98°', '144°', '120°'] | multi_choice |
stat474 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/474.png | If it is the line chart of the results of 5 physical fitness tests before the physical education exam for students A and B, which of the following statements is correct ( ) | B | ["A's performance is more stable, and the average score is higher.", "B's performance is more stable, and the average score is lower.", "A's performance is more stable, and the average score is lower.", "B's performance is more stable, and the average score is higher."] | multi_choice |
stat477 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/477.png | A primary school conducted after-school services, offering four sports activities: table tennis, volleyball, basketball, and football. To determine which sport is the most popular among students, 100 students were randomly selected for a survey (each student selected only one option), and the survey results were presented in the following pie chart. The incorrect statement is ( )
A. The sample size of this survey is 100
B. The number of students who prefer basketball accounts for 30% of the respondents
C. The number of students who prefer football is 40
D. The central angle of the pie chart corresponding to 'volleyball' is 10° | D | ['The sample size of this survey is 100.', 'The number of students who like basketball the most accounts for 30% of the survey.', 'The number of students who like football the most is 40.', 'The central angle corresponding to volleyball in the pie chart is 10°.'] | multi_choice |
stat48 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/48.png | As shown in the figure, when the spinner is spun once, there are the following events: ① the pointer falls in the region labeled 5; ② the pointer falls in the region labeled 10; ③ the pointer falls in the region labeled with an odd number. Please arrange the sequence numbers of these events in ascending order of the likelihood of occurrence ________. | ②①③ | NULL | free_form |
stat487 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/487.png | As shown in the figure, line a || b, and line c intersects with both lines a and b. From angles ∠2, ∠3, ∠4, and ∠5, if one angle is chosen at random, what is the probability that the selected angle is supplementary to ∠1? | D | ['1/4', '2/3', '3/4', '1/2'] | multi_choice |
stat498 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/498.png | To implement the requirements of the Ministry of Education regarding 'ensuring students have one hour of physical activity in school and one hour out of school daily,' the school encourages students to maintain daily physical exercise. Xiao Liang recorded his daily out-of-school exercise time (in minutes) for a week and created a statistical line chart as shown in the figure. Based on the chart, which of the following descriptions about Xiao Liang's daily out-of-school exercise time that week is correct?
A. The mean is 70 minutes
B. The mode is 67 minutes
C. The median is 67 minutes
D. The variance is 0 | B | ['The average is 70 minutes', 'The mode is 67 minutes', 'The median is 67 minutes', 'The variance is 0'] | multi_choice |
stat5 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/5.png | On April 20 this year, a 7.0-magnitude earthquake occurred in Lushan County, Ya'an. For earthquake relief, a class organized an activity called 'Donating Pocket Money to Show Love.' The donation situation for all 50 students in the class is shown in the chart below. What is the mode of the donation amounts in this activity? ______ yuan. | 10 | NULL | free_form |
stat501 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/501.png | 2. In 2022, the sales of new energy vehicles (NEVs) in China continued to grow, with annual sales reaching approximately 5.726 million units, an increase of 91.7% year-on-year, maintaining the global number one position for eight consecutive years. The following statistical chart reflects the monthly sales and year-on-year growth rate of NEVs in 2021 and 2022. (The year-on-year growth rate for 2022 = (sales in the same month of 2022 - sales in the same month of 2021) / sales in the same month of 2021 × 100%). Based on the information provided in the chart, which of the following conclusions is unreasonable?
A. The highest monthly sales of NEVs in 2021 occurred in December, exceeding 400,000 units.
B. In 2022, there were six months in which monthly NEV sales exceeded 500,000 units.
C. Compared to 2022, the fastest year-on-year NEV growth rate in 2022 was in February, reaching 181.1%.
D. Compared to 2021, the year-on-year NEV growth rate in 2022 continued to decline starting from May. | D | ['In 2021, the highest monthly sales volume of new energy vehicles was in December, exceeding 407,000 units.', 'In 2022, the monthly sales volume of new energy vehicles exceeded 507,000 units for 6 months.', 'Compared to 2021, the month with the highest year-on-year growth rate of new energy vehicle sales in 2022 was February, reaching 181.1%.', 'Compared to 2021, the year-on-year growth rate of new energy vehicle sales in May and June 2022 was lower.'] | multi_choice |
stat508 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/508.png | The age distribution of a school's football team members is shown in the diagram. Which of the following statements about the team's age statistics is correct? | D | ['The average age is 16 years old', 'The median age is 14 years old', 'If the team members are the same this year as last year, then the variance of this year is greater than last year', 'If the oldest player leaves the team, then the variance will decrease'] | multi_choice |
stat515 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/515.png | As shown in the diagram, it displays the sales revenue and growth rate statistics of a certain supermarket from 2017 to 2021. Which of the following statements is correct? | D | ['In these 5 years, the sales amount first increased and then decreased.', 'In these 5 years, the growth rate first increased and then decreased.', 'In these 5 years, the growth rate in 2021 was the highest.', 'In these 5 years, the sales amount in 2021 was the highest.'] | multi_choice |
stat517 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/517.png | 5. With the approaching junior high school academic level examination, a school conducted subject knowledge simulation tests for four consecutive months and organized the test results into the statistical chart shown (the number of students participating in the four simulation tests remained unchanged). Among the following four conclusions, which one is incorrect ( )? | D | ['A total of 500 students participated in the simulation test.', "From the first month to the fourth month, the number of students with 'excellent' test results increased gradually.", "In the second month, the number of students with 'excellent' test results reached 50.", "The increase in the number of 'excellent' students in the fourth month is less than the increase in the number of 'excellent' students in the third month."] | multi_choice |
stat519 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/519.png | A group conducted an experiment to 'estimate probability using frequency' and recorded the frequency of a particular result, plotting it into the line chart shown. Which of the following experiments most likely matches this result? ( ) | C | ['There is one red ball and two yellow balls in a bag, they only have distinctions in color, and the ball drawn from the bag at random is yellow', "Tossing a fair coin, the result is 'heads up'", 'Tossing a fair six-faced die, the upward face shows 2', 'Drawing a card at random from a deck of 52 cards without jokers, the card drawn is 7 of Clubs'] | multi_choice |
stat525 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/525.png | A landscaping company purchased a species of sapling. To determine the survival rate of the saplings after transplantation, they conducted random sampling and statistics on the first batch of saplings, as shown in the figure below. If the company needs approximately 1500 surviving saplings for the second batch, based on the statistical results, what would be a reasonable purchase amount for the second batch? | C. 1670 saplings | ['1350 saplings', '1500 saplings', '1670 saplings', '1800 saplings'] | multi_choice |
stat528 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/528.png | On February 28, 2023, the National Bureau of Statistics released the "Statistical Communiqué of the People's Republic of China on the 2022 National Economic and Social Development." The following chart shows the statistical data of "National Express Delivery Volume and Growth Rates from 2018 to 2022" published in the communiqué. Which of the following statements is incorrect? ( ) | D | ['The national express business volume in 2022 was 110.58 billion pieces.', 'The express business volume in 2022 increased by 3.7% compared to 2018.', 'The express business volume in 2022 increased by 2.1% compared to 2021.', 'The trend line of the growth rate from 2020 to 2022 shows a downward trend, indicating that the express business volume decreased year by year from 2020 to 2022.'] | multi_choice |
stat531 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/531.png | A school's basketball team has 20 players. The ages of all players are compiled into the following statistical table, but the numbers of players aged 13 and 14 were accidentally obscured by ink. Among the following statistical measures, which ones remain unaffected? ( ). A. Median, variance B. Mode, variance C. Mean, median D. Median, mode | D | ['Median, variance', 'Mode, variance', 'Mean, median', 'Median, mode'] | multi_choice |
stat536 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/536.png | A shopping mall sells five brands of washing machines: A, B, C, D, and E. The frequency distribution histogram of their sales volume over a certain month is shown in the figure. Based on the information provided by the histogram, which of the following statements is incorrect? | C | ['In this mall, a total of 240 washing machines were sold this month', 'This month, the frequency of sales of brand E washing machines is 0.125', "The frequency of this month's sales of brand B washing machines is 25", 'This month, the sale of brands A and D washing machines is the same'] | multi_choice |
stat55 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/55.png | A foreign trade company plans to export a batch of red dates packaged in 200g boxes. Two manufacturers, A and B, offer sources with the same price and similar quality. A quality inspector randomly selects 15 boxes from each manufacturer for testing and finds the average weight of the boxes to be 200g in both cases. Based on the data shown in the graph, determine which manufacturer's product better meets the specifications: _________ (fill in 'A' or 'B'). | A | NULL | free_form |
stat550 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/550.png | As shown in the figure, it demonstrates the results of simulating the experiment of tossing a beer bottle cap using a computer. The most reasonable statement is ( ).
A. When the number of tosses is 1000, the computer records a frequency of 'convex side up' as 0.443, so the probability of 'convex side up' is 0.443
B. If this experiment is simulated again, then when the number of tosses is 1000, the frequency of 'convex side up' will definitely be 0.443
C. As the number of trials increases, the frequency of 'convex side up' generally approaches a stable value near 0.440. It can be estimated that the probability of 'convex side up' is 0.440
D. When the number of tosses exceeds 5000, the frequency of 'convex side up' will definitely be 0.440 | C | ["When the number of flips is 1000, the probability of 'concave side up' recorded by the computer is 0.443, so the probability of 'concave side up' is 0.443.", 'If the actual experiment is simulated by a computer, when the number of flips is 1000, the probability must be 0.443.', "As the number of flips increases, the probability of 'concave side up' gradually stabilizes around 0.440, so the probability of 'concave side up' can be estimated to be 0.440.", "When the number of flips exceeds 5000, the probability of 'concave side up' must be 0.440."] | multi_choice |
stat551 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/551.png | As shown in the figure, it is a frequency line chart of superior-quality ping pong balls in a batch. The stable value of the frequency of superior-quality ping pong balls in this batch is approximately (to two decimal places) ( ). | B. 0.95 | ['0.91', '0.95', '0.98', '0.97'] | multi_choice |
stat556 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/556.png | In a certain speech competition, the scores (in integers) of some selected students are organized and plotted into the frequency histogram as shown. Which of the following conclusions is incorrect?
A. The class width is 10
B. The total number of selected students is 50
C. The excellent rate (scores above 80 are considered excellent) is about 18%
D. The percentage of students scoring between 60.5 and 70.5 points is 20% | C | ['The group interval is 10', 'The total number of selected students is 50', 'The excellence rate (score of 80 and above is excellent) is around 18%', 'The number of people with scores between 60.5 and 70.5 accounts for 20% of the total selected people'] | multi_choice |
stat557 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/557.png | As shown in the figure, in a 2×2 square grid, there are 9 grid points. Points A and B are already selected. Among the remaining 7 points, what is the probability of selecting point C such that △ABC forms a right triangle? | B | ['1/2', '4/7', '3/7', '2/5'] | multi_choice |
stat56 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/56.png | A school has a total of 1000 students. To understand the distribution of students' middle and long-distance running results, scores of 100 randomly selected students were used to draw a bar chart, as shown. Based on the statistical knowledge you have learned, estimate the number of students in the school with excellent middle and long-distance running results ________. | 270 | NULL | free_form |
stat561 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/561.png | A study group conducted an experiment on 'estimating probability using frequency' and recorded the frequency of a certain outcome. They created the following line graph. The experiment that most likely matches this result is:
A. Tossing a fair coin twice, with one heads and one tails.
B. Tossing a fair coin twice, with both outcomes being tails.
C. Rolling a fair six-sided die, with the number facing up being even.
D. Rolling a fair six-sided die, with the number facing up being 2 or 4. | D | ['Two tosses of an evenly weighted coin, with one showing heads and one showing tails', 'Two tosses of an evenly weighted coin, both showing tails', 'Toss of an evenly weighted six-faced die, getting an odd number face up', 'Toss of an evenly weighted six-faced die, the number face up is 2 or 4'] | multi_choice |
stat564 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/564.png | Using six playing cards numbered 1, 2, 3, 4, 5, and 6 to perform an experiment estimating the probability based on frequency. Xiao Zhang recorded the frequency of a certain outcome and plotted the statistical chart as shown. The experiment corresponding to this outcome could be ( )
A. The probability that the drawn card's number is a multiple of 3
B. The probability that the drawn card's number is odd
C. The probability that the drawn card's number is 0
D. The probability that the drawn card's number is greater than 3 | A | ['The probability that the drawn card number is a multiple of 3', 'The probability that the drawn card number is an odd number', 'The probability that the drawn card number is even', 'The probability that the drawn card number is greater than 3'] | multi_choice |
stat567 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/567.png | The school canteen offers three types of lunch boxes priced at 15 yuan, 18 yuan, and 20 yuan for students to choose from (each student purchases one). The sales situation of lunch boxes on a certain day is shown in the figure. What is the average cost of the lunch boxes purchased by students on that day? | C. 17 yuan | ['15 yuan', '16 yuan', '17 yuan', '18 yuan'] | multi_choice |
stat57 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/57.png | As shown in the bar chart, which represents the age structure of a middle school mathematics interest group, the youngest member is 11 years old, and the oldest is 15 years old. Based on the data provided in the chart, the median age of the group members is _______ years. | 13 | NULL | free_form |
stat570 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/570.png | As shown in the figure, the areas of the 6 sectors on the spinning wheel are equal. When the wheel is spun once and stops, what is the probability of the event 'the pointer points to a number greater than 4 in the sector'? | C | ['5/6', '1/2', '1/3', '1/6'] | multi_choice |
stat571 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/571.png | On May 18, 2023, the 'Dalian Daily' published the results of the survey 'Next Stop: To the Museum.' A total of 36,666 valid questionnaires were collected in this survey, and the data on the question 'What do you like to see most in museums?' was made into a pie chart, as shown. Which of the following options is incorrect? ( )
A. The number of people who like to see 'cultural relics exhibits' the most is the highest.
B. The number of people who like to see 'cultural and creative products' accounts for 1.43% of the surveyed population.
C. The number of people who like to see 'exhibition design' exceeds 500.
D. The central angle corresponding to 'special effects experience and others' in the pie chart is 23.76°. | C | ["The number of people who like to see 'cultural relics' is the largest.", "The number of people who like to see 'cultural and creative products' accounts for 14.3% of the survey.", "The number of people who like to see 'exhibition design' is less than 500 people.", "The angle corresponding to the 'special effects experience and others' in the statistical chart is 23.7°."] | multi_choice |
stat581 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/581.png | As shown in the figure, it is a frequency distribution histogram of charitable donations by 45 students in a certain class (each group includes the lower boundary but not the upper boundary). How many students donated 15 yuan and above (inclusive of 15 yuan)? | C | ['13 people', '28 people', '32 people', '40 people'] | multi_choice |
stat587 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/587.png | 5. During the May Day holiday, a shopping mall introduced a prize-winning activity: as shown in the figure, a spinning wheel is evenly divided into six parts, with one red part, two yellow parts, and three green parts. If you spin the wheel once, and the pointer points to the red section, you win the first prize; if it points to the yellow section, you win the second prize; and if it points to the green section, you win the third prize (if the pointer points to a boundary, the spin is invalid, and you need to spin again). The probability of winning the first prize with one spin is ( ). | B | ['1', '1/6', '1/3', '1/2'] | multi_choice |
stat593 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/593.png | As shown in the figure, it is a line chart of monthly sales volume for two types of products, A and B, during the first three quarters of 2018. Based on the chart, which of the following statements is incorrect?
A. From January to June, the monthly sales volume of product B exceeded that of product A
B. In July, the sales volumes of product A and product B were equal
C. For product B, the growth rate of monthly sales volume from July to August was the same as the growth rate from August to September
D. During the first three quarters of 2018, the sales volume of product A increased month by month | C | ['From January to June, the monthly sales of product B exceeded that of product A.', 'In July, the sales of product A and product B were the same.', 'For product B, the monthly sales growth rate from July to August is the same as that from August to September.', 'The sales of product A in the first three quarters of 2018 showed a month-on-month increase.'] | multi_choice |
stat594 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/594.png | As shown in the figure, this illustrates the result of a computer simulation of randomly tossing a coin in a certain experiment (Note: Frequency = Number of 'heads' / Number of tosses). Below are four inferences:
A. When the number of tosses is 600, the computer records the frequency of 'heads' as 0.667;
B. As the number of experiments increases, the frequency of 'heads' stabilizes around 0.618, which can estimate the probability of 'heads' to be 0.618;
C. If the computer simulation is repeated, when the number of tosses is 1000, the frequency of 'heads' must be 0.620;
D. If the computer simulation is repeated, when the number of tosses is 1000, the number of 'heads' must exceed 500 times.
Which of the above is reasonable ( )? | B | ['①', '②', '③', '④'] | multi_choice |
stat595 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/595.png | As shown in the figure below, the result of a computer simulation of randomly throwing a thumbtack is displayed. There are three inferences below: ① When the number of throws is 500, the computer records a frequency of 'point up' as 0.616, so the frequency of 'point up' is 0.616; ② If this experiment is simulated using a computer, then with 1000 throws, the frequency of 'point up' will definitely be 0.620; ③ As the number of experiments increases, the frequency of 'point up' stabilizes around 0.618, showing a certain degree of stability, and the probability of 'point up' can be estimated as 0.618. Which of the following are reasonable? A.①③ B.②③ C.①② D.①②③ | A | ['①③', '②③', '①②', '①②③'] | multi_choice |
stat598 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/598.png | As shown in the figure, a circle is divided into three sectors. If the radius of the circle is 2, the central angle (in degrees) and the area of the largest sector are ( ). | B | ['108°, 6π/5', '162°, 9π/5', '150°, 5π/3', '162°, 5π/2'] | multi_choice |
stat6 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/6.png | The pie chart shows the number of ice creams sold in various flavors at a cold drink shop in a day. The number of red bean-flavored ice creams sold is 200. How many fruit-flavored ice creams were sold? | 150 | NULL | free_form |
stat605 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/605.png | As shown in the figure, the front sides of these three cards are painted with different patterns, while the back sides are completely the same. If these three cards are placed face down on the table and two cards are randomly drawn, what is the probability that both cards have a central symmetric pattern? ( ) | B | ['1/6', '1/3', '2/3', '1'] | multi_choice |
stat613 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/613.png | A store sells five types of shirts with collar sizes (in cm) of 38, 39, 40, 41, and 42. To investigate the sales situation of shirts with different collar sizes, the store collected the sales data of a certain day and created the corresponding pie chart. Which collar size do you think the store sold the most shirts of ( )? | C | ['38 cm', '39 cm', '40 cm', '41 cm'] | multi_choice |
stat616 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/616.png | As shown in the diagram, the school volunteer center has drawn a bar chart showing the proposed number of volunteers to be recruited each month in the first half of 2024. Which of the following statements is incorrect? ( ) | C | ['The number of volunteers recruited in February is the least.', 'The number of volunteers recruited in April is the most.', 'The number of volunteers recruited from January to April increases month by month.', 'The number of volunteers recruited in three months is the same.'] | multi_choice |
stat62 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/62.png | As shown in the figure, a dartboard is composed of 9 identical small squares except for their color. Assume that hitting each small square is equally probable (if the dart hits the boundary of the small square or misses the dartboard, it is re-thrown once). What is the probability of hitting the black area in a single dart throw? | 1/3 | NULL | free_form |
stat626 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/626.png | As shown in the figure, if two of the switches S₁, S₂, S₃ are randomly closed, what is the probability that the light bulb will turn on?
A. 1/2 B. 1/3 C. 2/3 D. 1/4 | C | ['1/2', '1/3', '2/3', '1/4'] | multi_choice |
stat628 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/628.png | A line chart is drawn to depict the training results of two individuals, Jia and Yi, in a specific sports project over their last five training sessions. Which of the following conclusions is incorrect?
A. Jia's results in the third and fourth sessions are the same.
B. Jia's scores were lower than Yi's in every session.
C. Yi's score in the fourth session is 2 points higher than Jia's score in the same session.
D. The score difference between Jia and Yi is the largest in the first session. | B | ["Jia's scores for the third and fourth sessions are the same", "Jia's score is lower than Yi's in each session", "Yi's score for the fourth session is two points higher than Jia's", 'The largest difference in scores between Jia and Yi occurred in the first session'] | multi_choice |
stat630 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/630.png | As shown in the figure, there are 2 entrances and 2 exits in an exhibition hall. Visitors can enter through any entrance and leave through any exit. What is the probability that Xiao Ming enters through Entrance 1 and leaves through Exit B? ( ) | C | ['1/2', '1/3', '1/4', '1/6'] | multi_choice |
stat631 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/631.png | If the monthly sales figures of a luxury car brand for the months of September to December 2023 are provided, which of the following statements is incorrect?
A. The sales volume of this car brand in October 2023 is 16,000 units.
B. The sales volume of this car brand continued to grow over these four months in 2023.
C. The sales volume of this car brand in December 2023 was the highest among these four months.
D. The fastest growth in sales volume among these four months occurred from October to November 2023. | B | ['The sales volume of this brand of car in October 2023 is 16,000 units.', 'The sales volume of this brand of car continues to increase in these four months of 2023.', 'The sales volume of this brand of car is the highest in December 2023 among these four months.', 'The sales volume of this brand of car increases the fastest from October to November 2023 among these four months.'] | multi_choice |
stat633 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/633.png | 6. With the rapid development of the internet, online shopping has become a primary consumption method in people's daily lives. The express delivery industry in China has entered the '100 billion parcels' era. The '2018-2022 Express Delivery Volume and Growth Rate Statistics Chart,' released by the National Bureau of Statistics in February 2023, is shown below.
Based on the statistical chart, which of the following conclusions is correct?
A. The express delivery volume increased year by year from 2018 to 2022.
B. The express delivery volume first increased and then decreased from 2018 to 2022.
C. The growth rate of the express delivery volume showed a declining trend from 2018 to 2022.
D. The growth rate of the express delivery volume was the lowest in 2019 during the 2018-2022 period. | A | ['The express delivery business volume increased year by year from 2018 to 2022.', 'The express delivery business volume decreased from 2018 to 2022.', 'The growth rate of the express delivery business volume showed a downward trend from 2018 to 2022.', 'The growth rate of the express delivery business volume was the lowest in 2019 from 2018 to 2022.'] | multi_choice |
stat637 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/637.png | 3. In 2022, the sales of new energy vehicles (NEVs) in China continued to grow, with annual sales of approximately 5.726 million units, representing a year-on-year increase of 91.7%, maintaining the number one global position for eight consecutive years. The following statistical graph illustrates the monthly sales of NEVs and the year-on-year growth rates for 2021 and 2022 (Year-on-year growth in 2022 = (Monthly sales in 2022 - Monthly sales in 2021) / Monthly sales in 2021 × 100%). Based on the information provided in the statistical graph, which of the following conclusions is unreasonable?
A. The month with the highest monthly NEV sales in 2021 was December, exceeding 400,000 units.
B. In 2022, there were 8 months in which NEV monthly sales exceeded 400,000 units.
C. Compared to 2021, the fastest year-on-year growth rate for NEV sales in 2022 occurred in February, reaching 181.1%.
D. Compared to 2021, the year-on-year growth rate for NEV sales in 2022 has been continuously declining since May. | D | ['In 2021, the monthly sales volume of new energy vehicles exceeded 400,000 units in December.', 'In 2022, the monthly sales volume of new energy vehicles exceeded 400,000 units in 8 months.', 'Compared with 2021, the month with the fastest year-on-year growth rate of new energy vehicles in 2022 was February, reaching 181.1%.', 'Compared with 2021, the year-on-year growth rate of new energy vehicles from May to August 2022 was lower.'] | multi_choice |
stat638 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/638.png | 1. The annual expenditure statistics of households A and B are shown in the figure. According to the statistical chart, which of the following judgments about the annual education expenditure is correct? ( ). | D | ['Household A spends more on education than Household B.', 'Household A spends less on education than Household B.', 'Both households spend the same amount on education.', 'It is impossible to determine which household spends more on education.'] | multi_choice |
stat639 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/639.png | As shown in the figure, it displays the height information of six members each from Group A and Group B of a ski club. Which of the following statements is incorrect?
A. The range of Group A is 13 cm
B. The mode of Group A is 174 cm
C. The median of Group B is 176 cm
D. The variance of Group A is smaller than that of Group B | D | ['The range of Group A is 13cm', 'The mean of Group A is 174cm', 'The median of Group B is 176cm', 'The variance of Group A is smaller than that of Group B'] | multi_choice |
stat650 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/650.png | If, in a grid composed of equal-sized small squares, there is a 'heart-shaped line', the math group conducted a computer simulation experiment to explore the probability that a randomly thrown point would fall precisely inside the 'heart-shaped line.' The experimental data is as follows: Total trials | 100 | 200 | 300 | 500 | 1000 | 2000 | 3000 | 5000 | Times inside the 'heart-shaped line' | 61 | 93 | 156 | 264 | 759 | 1506 | 2598 | 3091 | Frequency of being inside the 'heart-shaped line' | 0.610 | 0.465 | 0.520 | 0.528 | 0.759 | 0.503 | 0.498 | 0.501. Based on the data in the table, estimate the probability of a randomly thrown point falling inside the 'heart-shaped line': ( ) A. 0.46 B. 0.50 C. 0.55 D. 0.61 | B | ['0.46', '0.50', '0.55', '0.61'] | multi_choice |
stat657 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/657.png | In a children's amusement park ball pit, there are four colors of ocean balls: red, yellow, blue, and white. Staff have created a statistical chart based on the number of ocean balls of different colors, as shown in the figure. It is known that there are 1200 red ocean balls. What is the number of white ocean balls? ( ) | C | ['2100个', '1800个', '900个', '180个'] | multi_choice |
stat658 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/658.png | Xiaoliang insists on exercising every day. He recorded the time (in minutes) he exercised each day for a week and created the statistical chart shown in the figure. Based on the chart, which of the following descriptions about Xiaoliang's daily exercise time that week is correct? | B. The mode is 67 minutes. | ['The average is 70 minutes', 'The mode is 67 minutes', 'The median is 67 minutes', 'The variance is 0'] | multi_choice |
stat667 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/667.png | In order to improve students' computational abilities, a school organized an activity themed 'Calculate and Shine.' The scores of 10 students from a certain class are shown in the chart. Which of the following conclusions is incorrect? | D | ['The mode is 90 points', 'The median is 90 points', 'The average score is 91 points', 'The variance is 15'] | multi_choice |
stat672 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/672.png | 4. An opaque box contains a total of 20 small balls that are red and white, indistinguishable except for their color. A ball is randomly drawn, its color is recorded, then it's returned to the box and thoroughly mixed. Another ball is then randomly drawn. Below are the experimental results from a mathematics study group conducting the above ball-drawing activity. Which of the following inferences is reasonable? ( ) | C | ['When the number of trials is 300, the number of times a red ball is drawn is 99, so the probability of drawing a red ball is 0.33.', 'If the above experiment is repeated, the number of times a red ball is drawn in 500 trials will definitely be 0.40.', 'As the number of trials increases, the frequency of drawing a red ball approaches 0.35, indicating stability, so the probability of drawing a red ball can be estimated to be 0.35.', 'Based on the experimental results, it can be calculated that there are 7 red balls in the box.'] | multi_choice |
stat674 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/674.png | 'The 'Three Rural Issues' refer to agriculture, rural areas, and farmers. With the resolution of the 'Three Rural Issues,' a farmer's annual income has changed significantly over the past two years. It is known that the income of the year before last and last year was 40,000 yuan and 60,000 yuan, respectively. The following pie charts are based on the proportions of annual income contributed by three crops (labeled ①, ②, and ③) for each year. Which of the following four conclusions derived from the pie chart is correct?' | A | ['The income from crop ③ last year was 19,500 yuan', 'The income from crop ② the year before last was 21,000 yuan', 'The proportion of income from crop ① last year was larger than the year before last', 'The income from crop ① was the same for both last year and the year before last'] | multi_choice |
stat675 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/675.png | Population aging is a global hot topic. The chart below shows the changes in the scale of the elderly population and the aging rate in China from 1982 to 2020. Based on the data in the chart, which of the following statements is incorrect? | B | ['Since 1982, the elderly population in China has been continuously increasing.', 'From 2000 to 2010, the increase in the elderly population was higher than that from 2010 to 2020.', 'According to the current growth trend, the aging rate in China may reach 18% or more by 2030.', 'With the continuous rise in the aging rate, the government needs to strengthen the establishment of a sound elderly care system.'] | multi_choice |
stat677 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/677.png | The diagram on the right displays two pie charts. Which of the following statements is incorrect? ( ) | C | ['The male workers in Factory A account for 3/5 of the total number of workers.', 'The female workers in Factory B account for 3/10 of the total number of workers.', 'The female workers in Factory A are definitely more than the female workers in Factory B.', 'The number of male workers in Factory A and Factory B might be the same.'] | multi_choice |
stat681 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/681.png | Based on the statistical chart, which of the following conclusions is correct?
A. During these 6 years, the annual growth rate of Yunnan Province's total economic output has always maintained growth.
B. During these 6 years, Yunnan Province's total economic output in 2023 doubled compared to 2018.
C. During these 6 years, Yunnan Province's total economic output grew at a uniform rate.
D. During these 6 years, the average total economic output of Yunnan Province exceeded 2.72 trillion yuan. | C | ["In these six years, the average annual growth rate of Yunnan's total economic volume has increased.", "In these six years, Yunnan's total economic volume in 2023 is the same as in 2018.", "In these six years, Yunnan's total economic volume has increased year by year.", 'In these six years, the average total economic volume of Yunnan has exceeded 2.72 trillion yuan.'] | multi_choice |
stat686 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/686.png | As shown in the figure, it is a line chart of the monthly extracurricular reading quantity of all students in a certain class from January to August of the year. Which of the following statements is correct? ( ) | A | ['The median number of readings per month is 58', 'The mode of the number of readings per month is 42', 'The average number of readings per month is 50', 'The range of the number of readings per month is 65'] | multi_choice |
stat687 | /home/yz979/scratch/chengye/math/data/original_set/statset/images/images/687.png | The 'Spring Bud Project' is a social welfare activity initiated by the China Children and Teenagers' Foundation under the leadership of the All-China Women's Federation. Its aim is to help girls from poor families complete their education successfully. A high school saw widespread participation from its teachers, who actively donated to this cause. The donation statistics from 50 teachers in the school are shown in the chart below. What are the mode and median of their donation amounts, respectively?
A. ¥200, ¥100
B. ¥100, ¥200
C. ¥200, ¥150
D. ¥100, ¥150 | B | ['200 yuan, 100 yuan', '100 yuan, 200 yuan', '200 yuan, 150 yuan', '100 yuan, 150 yuan'] | multi_choice |
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