"Histogram" data collection, organization and description PPT courseware 3

Description

"Histogram" data collection, organization and description PPT courseware 3

Question one:

How many classmates are having breakfast at home today?

So how many of our seventh-grade classmates have breakfast at home?

Question two:

The following are the basketball stars that Xiaoliang surveyed 50 students in class (2). The results are as follows:

A A B C D A B A A C B A B

C A A A B A B C A C A D A

B C A C B D A C A B A D A

A C D B C D A C A C A

What do we do with this data?

1. Analyze the problem:

(1) In this set of measured data, what is the tallest person? What's the shortest one? How much difference?

(2) In what range do these 63 students change?

(3) Which height range should students be selected to participate?

2. Organize data:

(1) Calculate the difference between the maximum value and the minimum value: _______

(2) Determine the group distance and number of groups: Range/group = _______ data is divided into _____ groups.

(3) Decide on points.

(4) Column frequency distribution table.

Question 1: The ages (years) of the 19 mathematics teachers in our school are as follows:

28, 44, 38, 37, 43, 32, 39, 34, 37, 42, 35, 40, 38, 45, 41, 4 3, 36, 42, 48

Please complete the following blanks:

(1) Calculate the difference between the maximum value and the minimum value: _______

(2) Determine the group distance and number of groups: Range/group distance = _______ data is divided into _____ groups.

(3) Decide on points.

(4) Column frequency distribution table. Draw frequency distribution histogram.

(5) Tell us your thoughts on the age frequency distribution table of 19 mathematics teachers.

Summary, reflection and improvement

What did you gain from this lesson?

1. How to draw frequency distribution histogram

2. Differences between frequency distribution histograms and bar graphs

3. What are the general steps to solve data problems?

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Update Time: 2024-11-24

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

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