Question

What is the variance of {40; 56; 59; 60; 60; 62; 65; 69; 75; 84}?

Answer 1

123.8

Explanation:

At first find `sum`x and `sum`x^2
`sum`x = 630
`sum` x^2 = 40928
AND n=10
Then, use the formula, Variance = `sum`x^2/n - (`sum`x/n)^2