i. The statistical technique used to test the equality of three or more population means is called analysis of variance (ANOVA). ii. To employ ANOVA, the populations should have approximately equal standard deviations.
iii. To employ ANOVA, the populations being studied must be approximately normally distributed.
A) (i), (ii), and (iii) are all correct statements.
B) (i) and (ii) are correct statements but not (iii).
C) (i) and (iii) are correct statements but not (ii).
D) (ii) and (iii) are correct statements but not (i).
E) (i), (ii), and (iii) are all false statements.

Question

Quizplus · Accepted Answer

Analysis of Variance (ANOVA) is indeed used to compare the means of three or more groups to see if at least one is significantly different from the others. It assumes that the populations from which samples are drawn have approximately equal variances (homogeneity of variances) and that the populations are normally distributed, especially as the sample size increases (central limit theorem).

I the Statistical Technique Used to Test the Equality of Three