"Statistical Survey" data collection, arrangement and description PPT courseware

Description

"Statistical Survey" data collection, arrangement and description PPT courseware

Question 1

What would you do if you wanted to know the class's preference for TV programs in five categories: news, sports, animation, entertainment, and opera? How to investigate?

way of raising hands

Is there any other way?

Questionnaire method

The difference between statistical tables and statistical charts:

The data reflected in the statistical tables are accurate and easy to find;

Statistical charts intuitively represent changes, but often cannot see accurate data.

In practical problems, statistical tables and charts are often combined to describe data. It is necessary to be able to select appropriate statistical charts to describe data according to different problems to facilitate data analysis and ultimately make reasonable decisions.

Data collection

A certain class ranked the students' favorite animal numbers in order of student numbers, and obtained the following 42 data:

1 1 2 2 4 6 3 4 5 1 2 4

6 2 1 2 3 5 5 6 1 3 1 4

1 3 2 1 5 4 5 4 1 4 5 3

1 4 2 1 2 5

Homework

1. Statistical charts can help us discover some meaningful conclusions very intuitively. We have learned three types of statistical charts, namely ____statistical chart, ___statistical chart___ statistical chart.

2. To describe the changes in the total number of gold medals won by our country in the Olympic Games for five consecutive years, the _______ statistical chart should be chosen.

3 Figure 1.1-11 is an image of the temperature change over time in a certain place on a day. According to the image, it can be seen that the highest temperature and the moment when the highest temperature is reached on this day are ( ) respectively.

A. 14℃, 12h

B． 4℃, 2h

C. 12℃, 14h

D. 2℃, 4h

4. Make statistics on the mathematics scores of 40 students in a class. After proper grouping, the number of people marked in the score range of 80 to 90 points is: positive one, then the percentage of the number of people in this score range in this class to the whole class is ( )

A. 20% B. 40% C. 15% D. 25%

analyze data

Among the whole class, there are ____ people who like ________ the most, accounting for ___%

Students who like _______ rank second, there are ____ people, accounting for ___%

Students who like _______ ranked third, with ____ people accounting for ___%

Students who like _______ rank fourth, there are ____ people, accounting for ___%

Students who like _______ are ranked fifth, with ____ people accounting for ___%

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Update Time: 2024-07-10

This template belongs to Mathematics courseware People's Education Press Seventh Grade Mathematics Volume 2 industry PPT template

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