A sum of squares that measures the variability among the sample means is referred to as the:
A)Treatment sum of squares.
B)Error sum of squares.
C)Sum of squares within-treatment.
D)Total sum of squares.
E)Interaction sum of squares.

Question

Quizplus · Accepted Answer

The treatment sum of squares measures the variability among the sample means, specifically the deviation of each sample mean from the overall mean. This is the source of variability that we are interested in explaining and testing in many analyses of variance (ANOVA).

A Sum of Squares That Measures the Variability Among the Sample