Question

8. A class teacher has the following absentee record of 40 students of a class for the whole
term. Find the mean number of days a student was absent.with method step-deviation
0 - 66 - 10 10 - 14/14 - 201 20-28 28 - 38/38 - 40
Number of
days
11
10
7
4
3
1
Number of
students​

Answer 1

Answer:

Therefore, the mean number of days is 12.48 days for which a student was absent.