In an analysis of variance,differences caused by treatment effects contribute to which of the following variances?
A)Both between-treatments variance and within-treatments variance
B)Between-treatments variance but not within-treatments variance
C)Within-treatments variance but not between-treatments variance
D)Neither between-treatments variance nor within-treatments variance

Question

Quizplus · Accepted Answer

Differences caused by treatment effects are captured in the between-treatments variance, which compares the means of the different treatment groups. The within-treatments variance, on the other hand, compares the variability within each treatment group, which may be due to individual differences, measurement error, or other factors not related to the treatment. Therefore, the correct answer is B, between-treatments variance but not within-treatments variance.

In an Analysis of Variance,differences Caused by Treatment Effects Contribute