Question

HELP!

If the mean of the data set shown below is 11, find x.

x, 12, 8, 15

A. 9
B. 10
C. 11.5

Answer 1

Use the process of elimination to find your answer. Go through the answers and plug them in as x. Your answer will be x = A. 9

Answer 2

15+12+8+x=44
35-44=9
x=9