5 87.404 5.592 B 5 76.167 6.555 7 80.000 9.230 7 69.333 6.154 Source DF SS MS F P Groups 3 1018.00 339.33 6.56 0.003 Error 20 1035.34 51.77 Total 23 2053.34 What is the pooled standard deviation? What degrees of freedom are used in doing inferences for these means and differences in means? Round your answer for the pooled standard deviation to two decimal places. The pooled standard deviation is i degrees of freedom = i 61

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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5 87.404
5.592
B.
5 76.167
6.555
7 80.000
9.230
7 69.333
6.154
Source
DF SS
MS
F P
Groups
1018.00 339.33 6.56 0.003
Error
20 1035.34
51.77
Total
23 2053.34
What is the pooled standard deviation? What degrees of freedom are used in doing inferences for these means and differences in
means?
Round your answer for the pooled standard deviation to two decimal places.
The pooled standard deviation is i
degrees of freedom =
i
%3D
61°F Clear
Type here to search
II
Transcribed Image Text:5 87.404 5.592 B. 5 76.167 6.555 7 80.000 9.230 7 69.333 6.154 Source DF SS MS F P Groups 1018.00 339.33 6.56 0.003 Error 20 1035.34 51.77 Total 23 2053.34 What is the pooled standard deviation? What degrees of freedom are used in doing inferences for these means and differences in means? Round your answer for the pooled standard deviation to two decimal places. The pooled standard deviation is i degrees of freedom = i %3D 61°F Clear Type here to search II
Expert Solution
Step 1

The result of ANOVA :

Statistics homework question answer, step 1, image 1

For a pooled SD , we calculate the difference between each group value and its respective group mean, square those differences, add them all up (for all groups) , which corresponds to SS , then we divide SS by degrees of freedom to get MS

In ANOVA , the pooled SD is the square root of MSError

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