Consider the data with analysis shown in the following computer output: Level N Mean StDev A 4 10.500 2.902 B 5 16.800 2.168 C 6 10.800 2.387 Source DF SS MS F P Groups 2 125.07 62.54 10.34 0.002 Error 12 72.55 6.05 Total 14 197.62 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 = degrees of freedom =

spainhour83lz

spainhour83lz

Answered question

2022-08-11

Consider the data with analysis shown in the following computer output:
 Level   N   Mean   StDev   A  4 10.500 2.902  B  5 16.800 2.168  C  6 10.800 2.387
 Source   DF   SS   MS   F   P   Groups  2 125.07 62.54 10.34 0.002  Error  12 72.55 6.05  Total  14 197.62
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 =
degrees of freedom =

Answer & Explanation

Jakob Chavez

Jakob Chavez

Beginner2022-08-12Added 14 answers

Pooled  S d = ( n 1 1 ) s 1 2 + ( n 2 1 ) s 2 2 + ( n 3 1 ) s 3 2 n 1 + n 2 + n 3 3 = ( 4 1 ) 2.902 2 + ( 5 1 ) 2.168 2 + ( 6 1 ) 2.387 2 4 + 5 + 6 3 2.46
degrees of freedom = 4 + 5 + 6 - 3 = 12

Do you have a similar question?

Recalculate according to your conditions!

New Questions in College Statistics

Ask your question.
Get an expert answer.

Let our experts help you. Answer in as fast as 15 minutes.

Didn't find what you were looking for?