Interpreting the Results If your experiment had four treatment conditions, how many post hoc tests may you perform at the p

Question

Interpreting the Results If your experiment had four treatment conditions, how many post hoc tests may you perform at the p < .05 level?
A)3
B)4
C)5
D)6

Quizplus · Accepted Answer

When you have four treatment conditions, you can perform six post hoc tests at the p < .05 level. This is because you are comparing each condition against every other condition once. The formula to calculate the number of comparisons is n(n-1)/2, where n is the number of groups. For four groups, this is 4(4-1)/2 = 6.

Interpreting the Results If Your Experiment Had Four Treatment Conditions