A researcher computes a 3 * 5 between-subjects ANOVA.What are the degrees of freedom for the A * B interaction for this study?
A) 2
B) 4
C) 8
D) 15

Question

A researcher computes a 3 *  5 between-subjects ANOVA.What are the degrees of freedom for the A *  B interaction for this study?
A) 2
B) 4
C) 8
D) 15

Quizplus · Accepted Answer

The degrees of freedom for an interaction in a factorial ANOVA are calculated by multiplying the degrees of freedom of each factor involved in the interaction. For a 3x5 ANOVA, the degrees of freedom for factor A (with 3 levels) is 2 (3-1), and for factor B (with 5 levels) is 4 (5-1). Thus, the degrees of freedom for the AxB interaction are 2*4 = 8.

A Researcher Computes a 3 * 5 Between-Subjects ANOVA