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In the table below we could see the monthly oincome of 1000 workers from a factory. Find the coefficient of variation and teh standard deviation of the incomes. Round your answer.
Monthly income | Frequency (ni) |
[0 - 1000) | 180 |
[1000 - 2000) | 320 |
[2000 - 3000) | 230 |
[3000 - 4000) | 140 |
[4000 - 5000) | 90 |
Over 5000 | 40 |
Total | 1000 |
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