Mathematics
Consider the following distribution of daily wages of 50 workers of a factory.
| Daily wages (in ₹) | Number of workers |
|---|---|
| 500 - 520 | 12 |
| 520 - 540 | 14 |
| 540 - 560 | 8 |
| 560 - 580 | 6 |
| 580 - 600 | 10 |
Find the mean daily wages of the workers of the factory by using an appropriate method.
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Answer
By formula,
Class mark =
| Daily wages (in ₹) | Number of workers (fi) | Class mark (xi) | fixi |
|---|---|---|---|
| 500 - 520 | 12 | 510 | 6120 |
| 520 - 540 | 14 | 530 | 7420 |
| 540 - 560 | 8 | 550 | 4400 |
| 560 - 580 | 6 | 570 | 3420 |
| 580 - 600 | 10 | 590 | 5900 |
| Total | Σfi = 50 | Σfixi = 27260 |
By formula,
Mean = = 545.20
Hence, mean daily wage = ₹ 545.20
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