Question

The mean age of 5 children of a family is 12 years. If four of them are respectively 6,11,13,16 years the age of fifth child.

Answer 1

Answer:

let the age of fifth child is x

mean= sum of all observations/ no of observation

12=( x+6+11+13+16 )/5

by cross multiply

60 = 46 +x

x= 60-46

x= 14