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प्रश्न
Construct a cumulative frequency distribution table from the frequency table given below:
| Class Interval | Frequency |
| 1 - 10 | 12 |
| 11 - 20 | 18 |
| 21 - 30 | 23 |
| 31 - 40 | 15 |
| 41 - 50 | 10 |
बेरीज
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उत्तर
The cumulative frequency distribution table is
| C.I | c.f |
| 1 - 10 | 12 |
| 11 - 20 | 30 |
| 21 - 30 | 53 |
| 31 - 40 | 68 |
| 41 - 50 | 78 |
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