Within-groups variance reflects the:
A) amount of difference between means that we would expect to occur as a result of experimental manipulation.
B) average of the sample variances.
C) mean averages.
D) total amount of difference we would expect to occur, given both chance and experimental manipulation.

Question

Quizplus · Accepted Answer

Within-groups variance reflects the variability within each group of the sample. Thus, it is the average of the sample variances. Choice A describes the between-groups variance, which reflects the difference between means resulting from experimental manipulation. Choice C is not accurate as there is no such thing as "mean averages." Choice D describes the total variance, which is the sum of the within-groups and between-groups variances.

Within-Groups Variance Reflects The