If a main effect is significant and there are two levels to the IV, a Tukey HSD should be performed to see if the means are significantly different.

Name: If a main effect is significant and there are two levels to the IV, a Tukey HSD should be performed to see if the means are significantly different.
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Question

Quizplus · Accepted Answer

With only two levels of the independent variable, a Tukey HSD is unnecessary because the significance of the main effect directly indicates a significant difference between the two means.

If a Main Effect Is Significant and There Are Two