Question -
| xi | 5 | 7 | 9 | 11 | 13 | 15 | 17 |
| fi | 2 | 4 | 6 | 8 | 10 | 12 | 8 |
Answer -
To find the mean deviation from the median, firstly let uscalculate the median.
We know, N = 50
Median = (50)/2 = 25
So, the median Corresponding to 25 is 13
| xi | fi | Cumulative Frequency | |di| = |xi┬атАУ M| = |xi┬атАУ 61| | fi┬а|di| |
| 5 | 2 | 2 | 8 | 16 |
| 7 | 4 | 6 | 6 | 24 |
| 9 | 6 | 12 | 4 | 24 |
| 11 | 8 | 20 | 2 | 16 |
| 13 | 10 | 30 | 0 | 0 |
| 15 | 12 | 42 | 2 | 24 |
| 17 | 8 | 50 | 4 | 32 |
| Total = 50 | | | Total = 136 |
N = 50
MD=
= 1/50 ├Ч 136
= 2.72
тИ┤ Themean deviation is 2.72.