Dr. Hsu conducted a one-way ANOVA on a set of data examining digestive reaction to the smell of food and watching food preparation. Dr. Hsu had multiple experimental conditions. Dr. Hsu's one-way ANOVA yielded significant results, but the analysis was not able to tell him where the specific differences existed. Dr. Hsu will need to follow-up with which analysis to test all possible combinations of the conditions?
A) matched samples test
B) planned contrasts
C) independent sample t test
D) post-hoc analyses

Question

Quizplus · Accepted Answer

Post-hoc analyses are used after a significant ANOVA result to determine where the specific differences between groups lie, especially when multiple experimental conditions are involved and all possible combinations of conditions need to be compared.

Dr Hsu Conducted a One-Way ANOVA on a Set of Data