The degrees of freedom for an interaction in a two-way factorial are equal to
A) the degrees of freedom for the main effects.
B) the sum of the degrees of freedom for the main effects.
C) the product of the degrees of freedom for the main effects.
D) 6.

Question

Quizplus · Accepted Answer

The degrees of freedom for an interaction in a two-way factorial design are calculated by multiplying the degrees of freedom of each of the main effects. This is because the interaction effect explores the combined influence of the two factors at every level of each other, necessitating a calculation that accounts for all possible combinations of the levels of the two factors involved.

The Degrees of Freedom for an Interaction in a Two-Way