Posted by Cristina on .
A sample has n = 9 scores and an SS = 216. What is the variance for this sample?

Intro to Statistics 
PsyDAG,
Subtract each of the scores from the mean and square each difference. Find the sum of these squares. Divide that by the number of scores to get variance.
If your SS stands for sum of squares, the above information should tell you what to do.