Calculate the mean deviation about the mean for the following frequency distribution:
| Class interval | 0-4 | 4-8 | 8-12 | 12-16 | 16-20 |
| Frequency | 4 | 6 | 8 | 5 | 2 |
1
9.5
2
2.69
3
3.84
4
4.56
5
Not Attempted
Calculate the mean deviation about the mean for the following frequency distribution:
| Class interval | 0-4 | 4-8 | 8-12 | 12-16 | 16-20 |
| Frequency | 4 | 6 | 8 | 5 | 2 |