Analysis of variance should only be done when:
A)sample sizes are greater than 30 per group
B)there are less than 30 per group
C)population variances can be assumed to be equal
D)population sizes are approximately equal

Question

Quizplus · Accepted Answer

Analysis of variance assumes that population variances are equal. If this assumption is violated, then the results of the analysis can be misleading. Therefore, it is important to check for homogeneity of variances before conducting an ANOVA. If the assumption of equal variances is violated, then a different type of statistical analysis such as a Welch's ANOVA or a non-parametric test may be more appropriate. Sample size and population sizes are not crucial factors in determining whether an ANOVA is appropriate.

Analysis of Variance Should Only Be Done When