Dr Moye Is Lecturing on Various Statistical Analyses in Class

Multiple Choice

Dr. Moye is lecturing on various statistical analyses in class. He notes the definition for planned contrasts as:

A) statistical tests in which both variables are categorical and which determine if the distribution of participants across categories is different than expected.
B) statistical tests that examine all of the possible combinations of conditions in a way that statistically accounts for the fact that we did not predict them ahead of time.
C) statistical tests that determine whether responses from the different conditions are essentially the same or whether the responses from at least one of the conditions differ from the others.
D) statistical tests that allow a priori decisions to test comparisons between groups predicted ahead of time.