Question
Construct the cumulative frequency table from the frequency table given below :
| Class-interval | 0-6 | 6-12 | 12-18 | 18-24 | 24-30 |
| Frequency | 7 | 11 | 8 | 14 | 12 |
✓
Answer
| Class-interval | Frequency | Cumulative frequency |
| 0-6 | 7 | 7 |
| 6-12 | 11 | 18 |
| 12-18 | 8 | 26 |
| 18-24 | 14 | 40 |
| 24-30 | 12 | 52 |
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