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प्रश्न
Construct a frequency distribution table from the following cumulative frequency distribution:
| Class Interval | Cumulative Frequency |
| 10 - 19 | 8 |
| 20 - 29 | 19 |
| 30- 39 | 23 |
| 40- 49 | 30 |
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उत्तर
The frequency distribution table is
| C. I | c.f |
| 10 - 19 | 8 |
| 20 - 29 | 11 |
| 30 - 39 | 4 |
| 40 - 49 | 7 |
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| Frequency | 6 | 12 | 10 | 15 | 9 | 2 |
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| 10 – 20 | 5 |
| 20 – 30 | 10 |
| 30 – 40 | 4 |
| 40 – 50 | 15 |
| 50 – 60 | 12 |
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