A sum of squares that measures the variability among the group sample means is referred to as the _______ sum of squares.
A)between-groups
B)error
C)interaction
D)total
E)block

Question

Quizplus · Accepted Answer

The between-groups sum of squares measures the variability among the group sample means, while the error sum of squares measures the variability within each group. The interaction and block sums of squares would be relevant only in certain experimental designs, and the total sum of squares includes variability from both between-groups and within-groups sources.

A Sum of Squares That Measures the Variability Among the Group