If X is a variate taking values x1,x2,…,xn.Y is another variate taking values y1,y2,…,yn such that yi=2xi+3 and σY=8, then the variance of variable Z taking values 32xi;i=1, 2,…,n, is
If is a variate taking values .Y is another variate taking values such that and , then the variance of variable Z taking values , is