since the variance is a measure of the absolute differences from the mean, shifting the mean by 14 and flipping the difference does not affect the variance.
(B)
If the variance of the four numbers a,b,c and d is 9, then the variance of the four numbers 14-a, 14-b, 14-c and 14-d is _?
A. 5
B. 9
C. 23
D. 121
1 answer
1 answer