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Answer variants:
\(\text{Less than }\)\(30\)
14
\(\text{Less than }\)\(60\)
14
21
45
\(\text{Less than }\)\(50\)
37
63
\(\text{Less than }\)\(40\)
\(\text{Less than }\)\(80\)
\(\text{Less than }\)\(70\)
Construct a cumulative frequency distribution of less than type for the following data.
| Class interval | Frequency |
| Below 30 | 14 |
| 30 \(-\) 40 | 0 |
| 40 \(-\) 50 | 7 |
| 50 \(-\) 60 | 16 |
| 60 \(-\) 70 | 8 |
| 70 \(-\) 80 | 18 |
Answer:
| Class interval | Frequency |
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