One difference between a planned comparison and Tukey's HSD test is that with the latter
A) a larger difference is required to be declared significant
B) a smaller difference is required to be declared significant
C) HSD comparisons must be specified in advance
D) planned comparisons should be specified after the outcome of the data is known

Question

Quizplus · Accepted Answer

Tukey's HSD test is more conservative and requires a larger difference to declare significance compared to planned comparisons, which are typically more liberal.

One Difference Between a Planned Comparison and Tukey's HSD Test