The following analysis of variance summary table applies to the next several questions.

In the experiment whose summary table is given above, the average standard deviation in each of the groups was approximately
A) 110.
B) 20.
C) 4.5.
D) 92.

Question

The following analysis of variance summary table applies to the next several questions.

In the experiment whose summary table is given above, the average standard deviation in each of the groups was approximately
A) 110. 
B) 20. 
C) 4.5. 
D) 92.

Quizplus · Accepted Answer

The average standard deviation in each group can be found by taking the square root of the mean square error. In this case, sqrt(20.25) = 4.5, so the answer is (C).

The Following Analysis of Variance Summary Table Applies to the Next