i. To employ ANOVA, the populations should have approximately equal standard deviations.
ii. To employ ANOVA, the populations being studied must be approximately normally distributed.
iii. The least number of sources of variation in ANOVA is two.
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) All statements are false

Question

i. To employ ANOVA, the populations should have approximately equal standard deviations. 
ii. To employ ANOVA, the populations being studied must be approximately normally distributed. 
iii. The least number of sources of variation in ANOVA is two.
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) All statements are false

Quizplus · Accepted Answer

ANOVA assumes homogeneity of variances (equal standard deviations) and normal distribution of populations. It also involves at least two sources of variation: between groups and within groups.

I to Employ ANOVA, the Populations Should Have Approximately Equal