The sum of the deviations of a set of n values x1, x2,...., xn, measured from 15 and −3 are −90 and 54 respectively. Find the value of n and mean.

The sum of the deviations of a set of n values x1, x2,...., xn, measur

1.	The sum of the deviations of a set of n values x1, x2,...., xn, measured from 15 and −3 are −90 and 54 respectively. Find the value of n and mean.
Answer» The sum of the deviations of a set of n values x₁, x₂,...., x_n, measured from 15 and −3 are −90 and 54 respectively. Find the value of n and mean.