Interpreting the Results Tad Made No Specific Experimental Predictions and Performed

Multiple Choice

Interpreting the Results Tad made no specific experimental predictions and performed a post hoc test after he found that his computed F was not significant.What mistake did he commit?

A) He should have performed an a priori test instead of a post hoc test
B) He should have performed either the F test or the post hoc test, but not both.
C) He should have performed the post hoc test before the F test.
D) He should have stopped after a nonsignificant F test.