Which of the followings statements is true about Analysis of Variance (ANOVA)?
A)If sample variances are equal you should seriously consider using a non-parametric test.
B)If sample variances are equal you should seriously consider using analysis of covariance (ANCOVA).
C)If sample variances are unequal (e.g., one is more than four times bigger than the other)you should seriously consider using a non-parametric test.
D)If sample variances are unequal (e.g., one is more than four times bigger than the other)you should seriously consider using analysis of covariance (ANCOVA).
E)None of the above.

Question

Quizplus · Accepted Answer

If sample variances are unequal (e.g., one is more than four times bigger than the other) you should seriously consider using a non-parametric test. ANOVA assumes equal variances, and violating this assumption can lead to incorrect conclusions. ANCOVA is not a suitable alternative in this case.

Which of the Followings Statements Is True About Analysis of Variance