Question

Dr. Spruill conducted a one-way ANOVA on a set of data examining political opinions after participants watched different propaganda footage from different eras. Each condition saw a different reel of footage and one condition simply watched a movie with no political agenda. Dr. Spruill's one-way ANOVA yielded significant results, but it was not able to tell him where the specific difference existed. Dr. Spruill will need to follow-up with which analysis to test all possible combinations of the conditions?

a. post-hoc analyses
b. factorial analysis
c. independent sample t-test
d. planned contrasts

Answer 1

a. post-hoc analyses

Explanation:

Post-hoc analyses refers to the analyses done after the complete study is accomplished and the conclusion is derived. After the derivation of the conclusion, the data are observed that whether or not they were specified previously. The data that is already collected is analyzed and new analysis is made out of thee data. The previous data is used for new analyze and new objective.

In the given situation, Dr. Spruill should follow post-hoc analyses to test all the possible combinations that can be derived from the given conditions.