Originally Posted by

**iamterribleatmaths** Hey, my question is;

Consider the following statements

A. One way analysis of variance is used to compare whether c groups have equal variances

B. The one-way ANOVA F test is fairly robust against departures normality, particularly in large samples

C. There are n-1 degrees of freedom associated with the total sum of squares, as each observation is compared to the grand mean based on all observations.

I am pretty confident that A is wrong as it is used to comapre whether c groups have equal *means*.

I know the first part of C about the degrees of freedom is right, but don'y understand the last part.

Any help would be great!