Question

What is the Mean Average deviation from the Mean?
Numbers: 6, 2, 3, 3, 2, 2

Answer 1

2.42

Explanation:

standard deviation= sqrt(variance)

Variance=E[X2] - E[X]2

E[X] = sum(X)/n=35/9, so E[X]2 = 1225/81

E[X2] =sum(X2)/n = 189/9 = 170/81

Variance= 476/81

Standard deviation = sqrt(476/81) ~2.42