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Question
Change the following distribution to a 'more than type' distribution. Hence draw the 'more than type' ogive for this distribution.
| Class interval: | 20−30 | 30−40 | 40−50 | 50−60 | 60−70 | 70−80 | 80−90 |
| Frequency: | 10 | 8 | 12 | 24 | 6 | 25 | 15 |
Graph
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Solution
| Class interval | Cumulative Frequency |
| More than 20 | 100 |
| More than 30 | 90 |
| More than 40 | 82 |
| More than 50 | 70 |
| More than 60 | 46 |
| More than 70 | 40 |
| More than 80 | 15 |
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