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9. The results of a random survey is displayed in the histogram as shown.
Number
of
Walkers
25
50
25
20
15
10
75
5
0
1-4
Walking Record
5-8
How many people are in the sample survey?
O 100
9-12
13-15
16-19
Miles per Weeks

9 The Results Of A Random Survey Is Displayed In The Histogram As Shown Number Of Walkers 25 50 25 20 15 10 75 5 0 14 Walking Record 58 How Many People Are In T class=

Sagot :

varshamittal029

The number of people in the sample survey is 75.

Survey sampling, as used in statistics, is the process of choosing a sample of constituents from a target population to perform a survey. The word "survey" can be used to describe a wide range of observational methods or procedures. Most frequently, a questionnaire meant to assess people's traits and/or opinions is employed in survey sampling. The topic of survey data collecting involves various methods of contacting sample participants after they have been chosen. Sampling is done to cut down on the expense and/or labor required to survey the complete target population. A census is a survey that includes all members of the target population. A sample is a subset or segment of a population from which data will be drawn.

The sample survey has

5 people in 1-4 miles per week

10 people in 5-8 miles per week

15 people in 9-12 miles per week

20 people in 13-15 miles per week

25 people in 16-19 miles per week

The number of people in the sample survey is

5 + 10 + 15 + 20 + 25

=5(1 + 2 + 3 + 4 + 5)

=5(15)

=75

Hence, the number of people in the sample survey is 75.

Learn more about sampling survey here-

brainly.com/question/24564273

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