Question

find the value of x is the mean of 18, 5, 3, 12, 10,17, x, 6, 6 is 9​

Answer 1

Answer:

∑(x)=18+5+3+12+10+17+x+6+6=77+x

N=9

Mean=9

Then,

         Mean=∑(x)/N

         or,9=(77+x)/9

         or,81=77+x

         ∴x=4

Step-by-step explanation: