Question

The numbers 3, 7, 13, 14, 16, 19, 20 and x are arranged in ascending order. If the mean of the numbers is equal to the median, find the value of x. *

Answer 1

Answer: X=28

Step-by-step explanation:

Mean =(Sum of observations)/(no. of observation)

          =(3+7+13+14+16+19+20+x)/8

           =(92+x)/8

Median of even no. of observation= average of the two middle no.

Median=(14+16)/2

             =15

As given, Mean =median

therefore,

(92+x)/8=15

92+x=120

x=120-92

x=28