Question

The mean of the data set 5, 10, 2, 1 and x is 5. What is the value of x ?

1 point
A) 5
B) 7
C) 13
D) 18

Answer 1

Answer: b) 7

Explanation:

mean = average of the data

`mean = (sum of all terms)/(total number of terms)`

`5 = (5+10+2+1+x)/(5)\\ 25 = 18+x\\\\25 - 18 = x\\\\7= x`