"Representation of Data" Collection and Organization of Data PPT Download (Lesson 1)

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"Representation of Data" Collection and Organization of Data PPT Download (Lesson 1)

Part One Content: Basic Knowledge Key Points

Knowledge point 1 Application of statistical tables

1. The statistics of the number of people entering and exiting the Zhuzhou Exhibition Hall during four time periods on a certain day are as follows. The time period with the largest change in the number of people in the museum is (B)

A.9:00—10:00 B.10:00—11:00

C.14:00—15:00 D.15:00—16:00

2. (Adapted) A middle school held a speech contest, and the scores of the participating students were calculated by segment. The results are as follows (out of 100 points):

If it is known that students with scores between 91 and 100 are winners, then the winning rate is 20%.

Knowledge Point 2 Fan Chart

3. The number of students in a certain class who likes various ball sports the most is represented by the fan-shaped statistical chart as shown in the figure. The following statement is correct (D)

A. You can directly see the total number of people in the class from the picture.

B. From the picture, you can directly see the specific number of people who like various ball games.

C. It can be directly seen from the picture that more students in the class like volleyball than football

D. From the picture, we can directly see the relationship between the number of students in the class who like various ball games the most.

Data representation PPT, part 2: improvement of comprehensive capabilities

7. The population distribution of 5 extracurricular groups in a certain class is as shown in the figure. If drawn into a fan chart, the corresponding center angle of the second group in the fan chart is (D)

A.45° B.60° C.72° D.120°

8. The picture below is a fan chart showing the distribution of Xiaogang’s work and rest time in a day (24 hours). If Xiaogang adjusts his daily reading time to 2 hours, then his reading time needs to be increased on the original basis ( )

A.105 minutes B.60 minutes

C.48 minutes D.15 minutes

9. As shown in the figure, a county conducted a special supervision and assessment on the work of 50 primary and secondary schools in the first half of the year. The results were recorded as four grades: A, B, C, and D. Then the schools in the county that were assessed obtained D There are 2 schools with grade-level results.

10. In order to understand the biology test situation of the eighth grade students in the school, a school randomly selected the biology test scores of some eighth grade students in the school and divided them into four categories: A (excellent), B (good), C (passed), and D (failed). Make statistics based on the level and draw the statistical results into the following statistical chart. Please answer the following questions based on the information given in the chart:

Data representation PPT, the third part: Expansion, exploration and breakthrough

12. A certain city actively carries out the "Sunshine into Campus" activity. Students in each school insist on exercising for one hour every day. Based on the actual situation, a certain school decided to mainly carry out four activities: "A: table tennis, B: basketball, C: running, D: skipping rope". Sports. In order to understand which event students like the most, some students were randomly selected for a survey, and the survey results were drawn into a bar graph as shown in the figure. Please answer the following questions based on the information in the figure:

(1) The percentage of people in the sample who like Project B the most is 20%;

(2) Can this statistical chart be represented by a fan chart? If so, please draw a fan chart.

Keywords: Free download of Beijing Normal University Edition seventh-grade mathematics PPT courseware, first volume, data representation PPT download, data collection and organization PPT download, .PPT format;

For more information about the PPT courseware "Data Collection and Organizing Data Representation", please click the Data Collection and Organizing PPT Data Representation PPT tab.

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Update Time: 2024-10-05

This template belongs to Mathematics courseware Beijing Normal University Edition Seventh Grade Mathematics Volume 1 industry PPT template

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