If the omnibus analysis of variance for a complex design reveals a statistically significant interaction effect,the source of the interaction effect may be identified using
A)simple main effects analyses.
B)null comparisons.
C)overall interaction analyses.
D)complex comparisons.

Question

Quizplus · Accepted Answer

Simple main effects analyses allow for the examination of the interaction effect by comparing the means of each level of one factor at each level of the other factor. This helps to identify the source of the interaction effect. Null comparisons do not provide information about the source of the interaction effect. Overall interaction analyses provide information about the significance of the interaction effect but not about its source. Complex comparisons do not help to identify the source of the interaction effect.

If the Omnibus Analysis of Variance for a Complex Design