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Essentials of Statistics for the B...

8th Edition
Frederick J Gravetter + 1 other
ISBN: 9781133956570

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Chapter
Section
BuyFindarrow_forward

Essentials of Statistics for the B...

8th Edition
Frederick J Gravetter + 1 other
ISBN: 9781133956570
Textbook Problem

A sample of n = 9 individuals participates in a repeated-measures study that produces a sample mean difference of MD = 4.25 with SS = 128 for the difference scores.

a. Calculate the standard deviation for the sample of difference scores. Briefly explain what is measured by the standard deviation.

b. Calculate the estimated standard error for the sample mean difference. Briefly explain what is measured by the estimated standard error.

a.

To determine
Standard deviation for the sample of difference scores.

To explain: Standard deviation for difference scores.

Explanation

Given info:

The study is repeated-measures study and the numbers of participants are n=9 and

SS=128.

Calculation:

Sample standard deviation:

s=SSn1=128</

b.

To determine
Estimated standard error for the sample means difference.

To explain: Standard error for sample means difference.

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