"Frequency and Frequency" Data Collection and Processing PPT Courseware 2

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"Frequency and Frequency" Data Collection and Processing PPT Courseware 2

The problem of two melon farmers

Lao Zhang and Lao Wang planted watermelons on an acre of land in order to compete on their melon growing techniques:

Lao Zhang randomly weighed 10 watermelons (kg)

They are: 2 8 10 4 6 6 4 2 8 10

Lao Wang also randomly weighed 10 watermelons (kg)

They are: 2 6 4 10 4 6 6 4 10 10

Both calculated the average weight of the watermelon to be 6kg, but S2 Zhang = 8 and S2 King = 6.4

Group cooperation and communication

1. What number should be found first when grouping, and then what should be calculated?

2. Where does the group distance come from? How to calculate the number of groups?

3. How to determine the boundary value?

In order to understand the time students spend at school for lunch, a school randomly checked the time spent by 20 students at school for lunch and obtained the following data: (Unit: minutes)

10 12 15 10 16 18 19 18 20 38

22 25 20 18 18 20 15 16 21 16

Please use 5 as a group interval to list a "frequency distribution table of the time spent by 20 students in a certain school at school lunch"

The blood types of 20 newborn babies born in Longquan City Hospital in January 2007 are as follows:

AB B A B B O AB B AB O

AB B A AB B AB O A B A

Please make a frequency distribution table

Blood type frequency distribution table of 20 newborn babies born in Longquan City Hospital in January 2007

Operation

1. Complete the "Cooperative Learning" group report sheet.

2. Complete the homework book.

3. Preview 3.1(2) Frequency

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For more information about the "Collection and Processing of Frequency and Frequency Data" PPT courseware, please click the "Collection and Processing of Frequency and Frequency ppt Data" ppt tab.

"Frequency and Frequency" PPT courseware:

"Frequency and Frequency" PPT courseware Learning objectives (1) Be able to find the frequency and frequency of an event (2) Be able to list frequency and frequency distribution tables. Problem situation Do you like watching basketball games? Who is your favorite basketball star? (A represents Yao Ming, B represents Yi Jian...

"Frequency and Frequency" Data Collection and Processing PPT Courseware 4:

"Frequency and Frequency" Data Collection and Processing PPT Courseware 4 Review and think about what should be paid attention to when sampling surveys? (1) The size of the sample (2) The representativeness of the sample (3) The breadth of the sample What is your favorite sport? ? Who is your favorite sports star? you..

"Frequency and Frequency" Data Collection and Processing PPT Courseware 3:

"Frequency and Frequency" Data Collection and Processing PPT Courseware 3 Let's talk about it. First answer the following questions, and then fill in the table below: (1) In these 10 trials, what is the frequency of tails? What is the relationship between the frequency of heads and the frequency of tails? ..

File Info

Update Time: 2024-11-21

This template belongs to Mathematics courseware Beijing Normal University eighth grade mathematics volume 2 industry PPT template

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