The score in Maths of 50 students of a class is given in the following table. Calculate the mean score.
| Interval | Frequencies |
| 0-10 | 2 |
| 10-20 | 11 |
| 20-30 | 28 |
| 30-40 | 6 |
| 40-50 | 3 |
1
28.8
2
22.2
3
24.4
4
26.6
The score in Maths of 50 students of a class is given in the following table. Calculate the mean score.
| Interval | Frequencies |
| 0-10 | 2 |
| 10-20 | 11 |
| 20-30 | 28 |
| 30-40 | 6 |
| 40-50 | 3 |