The following table gives the number of boys of a particular age in a class of 40 students. Calculate the mean age of the students Age (in years): 15 16 17 18 19 20 No. of students: 3 8 10 10 5 4
The following data give the number of boys of a particular age in a class of 40 students. Age (in years)151617181920Frequency(fi)3891163 Calculate the mean ager of the students.