If the mean of n observations ax1,ax2,ax3........axn is aX, show that (ax1-aX)+(ax2-aX)+ (axn-aX)=0

If the mean of n observations ax1,ax2,ax3........axn is $a X$ , show that $(a x 1 - a X) + (a x 2 - a X) + (a x n - a X) = 0$

Match the items on the right to the items on the left.

step 1

step 2

step 3

step 4

step 5