Question

The following tables shows the age of 20 students of a group age in years 16 18 20 22 24 30 numbers of students 2 4 5 6 2 1 find the mean age of students

Answer 1

age in years 16 18 20 22 24 30

numbers 2 4 5 6 2 1

mean age of students :

(16*2 + 18*4 + 20*5 +22*6 + 24*2 + 30*1)/20==20,7

mean age : 20,7