A graph of a two-factor study indicates an interaction when the lines on the graph ____.
A) are parallel
B) cross or converge
C) are steep in slope
D) have the same slope

Question

Quizplus · Accepted Answer

An interaction occurs when the lines representing the levels of one factor cross or converge rather than being parallel or having the same slope. This indicates that the effect of one factor depends on the level of the other factor, and the two factors are interacting to determine the outcome.

A Graph of a Two-Factor Study Indicates an Interaction When