Answer to Question #310157 in Statistics and Probability for elai

Question

given population 2,7,9 what is the population variance

Answer 1

Mean: $\mu=\frac{2+7+9}{3}=6.$

Variance: $\sigma^2=\frac{(2-6)^2+(7-6)^2+(9-6)^2}{3}=\frac{26}{3}.$