|
Marks |
0 - 10 |
10 - 20 |
20 - 30 |
30 - 40 |
40 - 50 |
|
No. of students |
6 |
5 |
3 |
5 |
1 |
The mean of the above data is
1
15
2
20
3
22
4
18
|
Marks |
0 - 10 |
10 - 20 |
20 - 30 |
30 - 40 |
40 - 50 |
|
No. of students |
6 |
5 |
3 |
5 |
1 |
The mean of the above data is