Mathematics
Find the mean of daily wages of 60 workers in a factory as per data given below:
| Daily wages (in ₹) | No. of workers |
|---|---|
| 90 | 12 |
| 110 | 14 |
| 120 | 13 |
| 130 | 11 |
| 150 | 10 |
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Answer
where
f = frequency (Number of workers)
x = observation (Daily wages)
| Daily Wages (₹) (x) | Number of Workers (f) | fx |
|---|---|---|
| 90 | 12 | 1080 |
| 110 | 14 | 1540 |
| 120 | 13 | 1560 |
| 130 | 11 | 1430 |
| 150 | 10 | 1500 |
| Total | 60 | 7110 |
so, ∑fx = 7110 and ∑f = 60
Mean = = 118.5.
Hence, mean of daily wages of 60 workers is ₹118.5
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