If the mean of the data 9, 17, 18, 14, x, 16, 15, 11 and 12 is x, then find the value of x.
A12
B10
C14
DNone of these
If the mean of the data 9, 17, 18, 14, x, 16, 15, 11 and 12 is x, then find the value of x.
A12
B10
C14
DNone of these