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 Number of days 0 - 6 6 - 10 10 - 14 14 - 20 20 - 28 28 - 38 38 - 40 Number of students 11 10 7 4 4 3 1

Question

Philoid · Accepted Answer

The above given data can be represented in the form of table as below:

Class Interval	fi	xi	fixi
0-6	11	3	33
6-14	10	8	80
14-20	7	12	84
20-28	4	17	68
28-38	4	24	96
38-40	3	33	99
	1	39	39
	∑fi = 40		∑fixi = 499

Mean can be calculated as follows:

= 12.4 (approx.)

Number of days	0 - 6	6 - 10	10 - 14	14 - 20	20 - 28	28 - 38	38 - 40
Number of students	11	10	7	4	4	3	1

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 absentNumber of days0 - 66 - 1010 - 1414 - 2020 - 2828 - 3838 - 40Number of students111074431

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

Number of days

0 - 6

6 - 10

10 - 14

14 - 20

20 - 28

28 - 38

38 - 40

Number of students

11

10

7

4

4

3

1