_____ is(are) an additional assumption that must be evaluated in a within-groups ANOVA compared to a between-groups ANOVA.
A) Random sampling
B) Order effects
C) Sample size
D) Mean differences

Question

Quizplus · Accepted Answer

In a within-groups ANOVA, participants are measured more than once, so the assumption of order effects (such as learning or fatigue) must be evaluated. This is not a concern in a between-groups ANOVA where each participant is measured only once. Random sampling, sample size, and mean differences are assumptions that must be considered in both types of ANOVA.

_____ Is(are) an Additional Assumption That Must Be Evaluated in a Within-Groups