If 
is the mean of x1, x2, …, xn then for a ≠ 0, the mean of 
It is given that 
... (i)
Required mean = 
From equation (i)
15
If is the mean of x1, x2, …, xn then for a ≠ 0, the mean of
It is given that ... (i)
Required mean =
From equation (i)