Suppose our data set is: 2,4,6,8 the mean of the above data is: (2+4+6+8)/4=20/4=5
Increasing the above value by 8 10,12,14,16 the mean will be: (10+12+14+16)/4 =52/4 =13 The difference in the two mean values i 13-5=8 Thus we conclude that if we increase our values by 8, the mean increases by 8
