Eduprobe
Question:
The following distribution gives the daily income of 50 workers of a factory.
| Daily Income (in Rs) | Number of workers |
|---|---|
| 100-120 | 12 |
| 120-140 | 14 |
| 140-160 | 8 |
| 160-180 | 6 |
| 180-200 | 10 |
| Convert the distribution above to a less than type cumulative frequency distribution, and draw its ogive. |
Solution:
Converting the given distribution to a less than type cumulative frequency distribution, we get
| Daily Income (in Rs) | Number of workers |
|---|---|
| <120 | 12 |
| <140 | 12+14=26 |
| <160 | 26+8=34 |
| <180 | 34+6=40 |
| <200 | 40+10=50 |
Let us now plot the points corresponding to the ordered pairs (120,12), (140,26), (160,34), (180,40) and (200,50) on graph paper and join them by a free hand smooth curve.