If you have a two-way ANOVA with a 2 *3 design,and the A main effect is the only significant ,which of the following would you do?
A)Perform post hoc comparisons for the 3 levels of the B factor.
B)Perform post hoc comparisons for the 2 levels of the A factor.
C)Perform post hoc comparisons for the interaction effect.
D)Perform no post hoc comparisons.

Question

If you have a two-way ANOVA with a 2 *3 design,and the A main effect is the only significant  ,which of the following would you do?
A)Perform post hoc comparisons for the 3 levels of the B factor. 
B)Perform post hoc comparisons for the 2 levels of the A factor. 
C)Perform post hoc comparisons for the interaction effect. 
D)Perform no post hoc comparisons.

Quizplus · Accepted Answer

Since the only significant effect is the A main effect, there is no need to perform any post hoc comparisons for the B factor or the interaction effect. Performing post hoc comparisons in this case would be unnecessary and would not provide any additional meaningful information. Therefore, the best choice is to perform no post hoc comparisons.

If You Have a Two-Way ANOVA with a 2 *3