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प्रश्न
Complete the following table to find the mean.
| Weekly wages (Rupees) |
Class mark (xi) |
No. of workers (fi) |
fixi |
| 0 – 2000 | 1000 | 15 | 15000 |
| 2000 – 4000 | `square` | 35 | 105000 |
| 4000 – 6000 | 5000 | 50 | 250000 |
| 6000 – 8000 | 7000 | 20 | 140000 |
| N = 120 | Σfixi = `square` |
Mean = `(sumf_ix_i)/(sumf_i)`
= `square/120`
= `square`
तक्ता पूर्ण करा
बेरीज
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उत्तर
| Weekly wages (Rupees) |
Class mark (xi) |
No. of workers (fi) |
fixi |
| 0 – 2000 | 1000 | 15 | 15000 |
| 2000 – 4000 | \[\boxed{3000}\] | 35 | 105000 |
| 4000 – 6000 | 5000 | 50 | 250000 |
| 6000 – 8000 | 7000 | 20 | 140000 |
| N = 120 | Σfixi = \[\boxed{510000}\] |
Mean = `(sumf_ix_i)/(sumf_i)`
= \[\frac{\boxed{510000}}{120}\]
= \[\boxed{4250}\]
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