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Construct the cumulative frequency distribution of the following distriution:
| Class | Frequency | Cumulative frequenc |
| 12.5-17.5 | 2 | |
| 17.5-22.5 | 22 | |
| 22.5-27.5 | 19 | |
| 27.5-32.5 | 14 | |
| 32.5-37.5 | 13 |
Answer variants:
57
43
24
2
70
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