Question

If the mean of 4, 5, 2, x, 6, 5, is 6
Find.. x..
(with proper solution)

Answer 1

Observation = 4,5,2,x,6,5
Mean = 6

Mean = Sum of Observation/Total Observation
       6 = 4+5+2+X+6+5 / 6
       6 =22 + X / 6 
     36 = 22 +X 
     X = 36 - 22
     X = 14