Which assumption is required for the randomized block model, but not for the two-factor fully-crossed ANOVA?
A) Independence
B) Homogeneity of variance
C) Normality
D) Sphericity

Question

Quizplus · Accepted Answer

Sphericity is an assumption required specifically for the randomized block model when dealing with repeated measures, but it is not a requirement for the two-factor fully-crossed ANOVA. Sphericity pertains to the equality of variances of the differences between all possible pairs of within-subject conditions, which is relevant in the context of repeated measures or matched subjects, as in the randomized block design.

Which Assumption Is Required for the Randomized Block Model, but Not