Question

Given the mean and most of the set data, please find the missing value of x in each set.

a) {3,5,6,8,9,2,1,0,5,x}; mean = 4
b) {6,7,2,9,4,x); mean = 5

Answer 1

a. 1

b. 2.

Explanation:

a) There are a total of 10 numbers so we have:

4 * 10 = 3+5+6+8+9+2+1+0+5+x

40 = 39 + x

x = 1.

b) 5*6 = 28 + x

x = 2.