In Performing a Two-Way ANOVA for a Two-Factor Factorial Experiment

Multiple Choice

In performing a two-way ANOVA for a two-factor factorial experiment under which of the following circumstances would we test the significance of the main effects?

A) Substantial interaction exists between factors 1 and 2.
B) Little or no interaction exists between factors 1 and 2.
C) The factor 1 sum of squares equals the factor 2 sum of squares.
D) We reject the null hypothesis of no interaction.
E) The error sum of squares is equal to the interaction sum of squares.