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You want to know the mean number of hours students with part-time jobs work cach week. At each of six schools you randomly survey 10 students with part-time jobs. Your results are shown. a. Use each sample to make an estimate for the mean number of hours students with part-time jobs work each week. Describe the variation of the estimates. Find the mean of each sample. Sample B D E 70 73 77 = 7.3 10 50 5 10 80 8. 10 90 9. 10 Mean 7.7 %3D 10 10 So, the six estimates are that students with part-time jobs work 5, 7, 7.3, 7.7, 8, and 9 hours each week. The estimates have a range of 9 5 4 hours. b. Use all six samples to make one estimate for the mean number of hours students with part-time jobs work each week. 440 The mean of all sample data is GO 7.3 hours. So, you can estimate that students with part-time jobs work 7.3 hours each week. Try It 2. Repeat Example 2, but estimate the medians instead of the means. 7

You want to know the mean number of hours students with part-time jobs work cach week. At each of six schools you randomly survey 10 students with part-time jobs. Your results are shown. a. Use each sample to make an estimate for the mean number of hours students with part-time jobs work each week. Describe the variation of the estimates. Find the mean of each sample. Sample B D E 70 73 77 = 7.3 10 50 5 10 80 8. 10 90 9. 10 Mean 7.7 %3D 10 10 So, the six estimates are that students with part-time jobs work 5, 7, 7.3, 7.7, 8, and 9 hours each week. The estimates have a range of 9 5 4 hours. b. Use all six samples to make one estimate for the mean number of hours students with part-time jobs work each week. 440 The mean of all sample data is GO 7.3 hours. So, you can estimate that students with part-time jobs work 7.3 hours each week. Try It 2. Repeat Example 2, but estimate the medians instead of the means. 7

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 26PFA
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MPLE 2 Estimating an Average of a Population You want to know the mean number of hours students with part-time jobs work each week. At each of six schools you randomly survey 10 students with part-time jobs. Your results are shown. ch Week , 8, 7, 8 ,12, 8, 8 a. Use each sample to make an estimate for the mean number of hours students with part-time jobs work each week. Describe the variation 5, 6, 9, 10 of the estimates. 6, 5, 6 10, 8, 6, 12 , 12, 16, 10 Find the mean of each sample. Sample D 70 = 7 10 73 = 7.3 10 77 = 7.7 10 50 5. 10 80 8. 10 90 9. 10 Mean So, the six estimates are that students with part-time jobs work 5,7, 7.3, 7.7, 8, and 9 hours each week. The estimates have a range of 9 5 4 hours. b. Use all six samples to make one estimate for the mean number of hours students with part-time jobs work each week. 440 The mean of all sample data is GO 7.3 hours. So, you can estimate that students with part-time jobs work 7.3 hours each week. I Try It 2. Repeat Example 2, but estimate the medians instead of the means.
Transcribed Image Text:MPLE 2 Estimating an Average of a Population You want to know the mean number of hours students with part-time jobs work each week. At each of six schools you randomly survey 10 students with part-time jobs. Your results are shown. ch Week , 8, 7, 8 ,12, 8, 8 a. Use each sample to make an estimate for the mean number of hours students with part-time jobs work each week. Describe the variation 5, 6, 9, 10 of the estimates. 6, 5, 6 10, 8, 6, 12 , 12, 16, 10 Find the mean of each sample. Sample D 70 = 7 10 73 = 7.3 10 77 = 7.7 10 50 5. 10 80 8. 10 90 9. 10 Mean So, the six estimates are that students with part-time jobs work 5,7, 7.3, 7.7, 8, and 9 hours each week. The estimates have a range of 9 5 4 hours. b. Use all six samples to make one estimate for the mean number of hours students with part-time jobs work each week. 440 The mean of all sample data is GO 7.3 hours. So, you can estimate that students with part-time jobs work 7.3 hours each week. I Try It 2. Repeat Example 2, but estimate the medians instead of the means.
Expert Solution
Step 1 : Introduction

Median :

The median is that the middle variety during a list of numbers that has been sorted ascending or downward, and it'd be a lot of descriptive of the info set than the typical.
When there square measure outliers within the series that would have an effect on the typical of the numbers, the median is usually utilized rather than the mean.

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