In a two-factor analysis of variance,a main effect is defined as _____.
A)the mean differences among the levels of one factor
B)the mean differences among all treatment conditions
C)the mean difference between the two factors
D)the difference between the largest treatment mean and the smallest treatment mean

Question

Quizplus · Accepted Answer

A main effect is the mean differences among the levels of one factor, regardless of the levels of the other factor. It represents the overall effect of one factor on the dependent variable.

In a Two-Factor Analysis of Variance,a Main Effect Is Defined