Question

71, 80, 82, 78, 80, 91, 107, 121, 125, 131, and 142. The variance of this data set is?

Answer 1

636.41818

Explanation:

^2=∑=1(−⎯⎯⎯)2−1

^2=−1

^2=6364.181811−1

^2=6364.181810

^2=636.41818

I hope this helps :)