"Data Collation" PPT Courseware 2 Simple campus recruitment activity planning plan summary enterprise and institution recruitment publicity lecture PPT template is a general PPT template for business post competition provided by the manuscript PPT, simple campus recruitment activity planning plan summary enterprise and institution recruitment promotion Lecture PPT template, you can edit and modify the text and pictures in the source file by downloading the source file. If you want more exquisite business PPT templates, you can come to grid resource. Doug resource PPT, massive PPT template slide material download, we only make high-quality PPT templates!
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Authoritative PPT Summary
"Data Collation" PPT Courseware 2
Observe and think
1. Aunt Li, a salesperson in the shopping mall, sold 20 pairs of telescoping shoes in one day. Record the size of each pair of shoes in the order of sales (unit: centimeters):
24.5 27 23.5 24 24.5 25 26 26 24 24.5
25 24.5 25 24.5 23.5 25 26 24 24.5
In order to clearly understand the number of telekinetic shoes of various sizes sold that day, how should the above data be organized?
2. What information can you get from this form? Do you have any good suggestions for arranging the next purchase plan?
From this, can you understand the significance of grouping data?
think about it
Do you have any other grouping methods for the above questions?
Therefore: Grouping is to divide all the collected data into several groups according to certain standards.
The advantage of grouping is that by grouping and organizing messy data, the overall distribution of the data can be clearly understood.
1. The following data is a survey record of the birth months of 50 students in a seventh-grade class:
2, 12, 9, 8, 11, 5, 7, 11, 6, 4,
11, 8, 5, 7, 2, 7, 2, 12, 1, 9,
9, 11, 3, 8, 6, 3, 10, 8, 11, 5,
12, 2, 4, 7, 8, 1, 9, 10, 5, 3,
8, 6, 12, 3, 8, 10, 4, 7, 9, 12.
(1) Please regroup the above data so that the whole class can see at a glance the number of births per month.
(2) Based on the results of grouping, please tell me immediately how many students in this class have birthdays this month (October)?
Class summary
1. After studying this lesson, what do you know about the methods of collecting data?
The basic methods for collecting data include observation, statistics, survey, experiment, literature review or Internet query, etc.
2. How to group data appropriately?
According to the specific situation of statistics (needs) and (data range), divide the range of (data) into (several groups) and arrange them into tables according to (a certain order);
Count the number of (original data) in each group and fill in the statistical table.
Keywords: data arrangement teaching courseware, Qingdao edition seventh grade mathematics volume PPT courseware download, seventh grade mathematics slide courseware download, data arrangement PPT courseware download, .PPT format;
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