The mean deviation for n observations x 1 , x 2 , ….., x n from their mean is given by

Question

Philoid · Accepted Answer

Let x₁,x₂,…x_n be n observation

And X is the aithemetic mean then,

We know, Standard deviation

So,

The mean deviation for n observations x1, x2, ….., xn from their mean is given by