Data x1, X2 If the average of XN is 5 and the variance is 2, then 3XL + 2, 3x2 + 2 The average of 3XN + 2 is______ The variance is______ .

Data x1, X2 If the average of XN is 5 and the variance is 2, then 3XL + 2, 3x2 + 2 The average of 3XN + 2 is______ The variance is______ .

Data x1, X2 The average of XN is. X = 1n (x1 + x2 +...) +xn)=5,S2=1n[(x1-.x)2+(x2-.x)2+… +(xn-.x)2=1n[(x1-5)2+(x2-5)2+… +(xn-5)2=2,3xl+2,3x2+2,… The average of 3XN + 2 = 1n (3XL + 2 + 3x2 + 2 +...) 3xn+2)=3×1n(x1+x...