Question 1

Multiple comparison tests are also known as&#10;A)post hoc tests&#10;B)a priori tests&#10;C)multi-group tests&#10;D)all of the above

Accepted Answer

Multiple comparison tests are typically conducted after an analysis of variance (ANOVA) to determine which specific groups or treatments differ significantly from each other. Post hoc tests are conducted after the ANOVA to make these specific comparisons. A priori tests, on the other hand, are planned before the study and are used to compare specific groups based on established hypotheses. Multi-group tests may refer to any test that involves comparing multiple groups, but it is not a commonly used term in statistics.

Question 2

The concept of homoscedasticity,as it applies to multiple comparison tests is&#10;A)equality of marginals totals&#10;B)equality of group sizes&#10;C)group kurtosis levels are equal&#10;D)none of the above

Accepted Answer

Homoscedasticity refers to the assumption that different samples have the same variance, which is not directly related to the options provided.

Question 3

In order to make a basic choice of which type of multiple comparison test can be used,you need to&#10;A)determine the sample size used in the data set&#10;B)test for equality of variances&#10;C)calculate the analysis of variance test first&#10;D)examine the marginal totals for equality

Accepted Answer

Testing for equality of variances is necessary to determine which type of multiple comparison test can be used.

Deck 21: Multiple Comparison Tests