When specific comparisons have not been planned ahead of time, increases in experimentwise alpha that occur when many comparisons are made can be reduced by using which of the following?
a. Pairwise comparisons
b. Post hoc comparisons
c. Planned comparisons
d. Increases in experimentwise alpha cannot be reduced after the experiment has been run.
Question 2
A priori comparisons, comparing only means for which specific differences are predicted by the research hypothesis, are also called
a. post hoc comparisons.
b. complex comparisons.
c. planned comparisons.
d. pairwise comparisons.
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