Question

Set of observation 4,7,x,8,9,10,the mean is 8 then x is equal to

Answer 1

Answer:

Since mean = Sum of Observations / No. of observations

Mean = (4 + 7 + x + 8 + 9 + 10) /6

8 = (38 + x )/6

8* 6 = 38 + x

48 = 38 + x

x = 48 - 38

x = 10