What is the pooled standard deviation

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Reference no: EM132848031

Consider the data with analysis shown in the following computer output:

Level N Mean St Dev

A 7 86.927 4.961

B 5 76.167 6.555

C 5 80.000 9.230

D 7 69.333 6.154

Source DF SS MS F P

Groups 3 1120.16 373.39 8.41 0.001

Error 20 887.54 44.38

Total 23 2007.70

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.

What is the pooled standard deviation is?

What is degrees of freedom?

Reference no: EM132848031

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