Question

Given that the mean of 16, w, 17, 9, X, 2, y, 7 and zis 11, find the mean
3
w, x, y and z.
this is related to mean​

Answer 1

Answer:

sum of 9 data = 9 × mean of 9 data = 9 × 11= 99

sum of w,x,y,z = 99 - (16+17+9+2+7)= 99 - 51 = 48

so mean of w, x, y, z = 48/4 = 12 ans.