Question

If the mean of 3, 1, 5, m and 9 is 4, the value of m is

Answer 1

Answer:

mean = sum of observations ÷ no. of observations

I.e

Mean = 3+1+5+m+9 ÷ 5

=4

( 18 +m) = 4 × 5

m = 20 _ 18

Answer is m= 2 [hope it will help u]