1. Calculate More than type Cumulative frequency table from the following grouped data
| Class | Frequency |
| 10 - 20 | 15 |
| 20 - 30 | 25 |
| 30 - 40 | 20 |
| 40 - 50 | 12 |
| 50 - 60 | 8 |
| 60 - 70 | 5 |
| 70 - 80 | 3 |
Solution:| Class | Frequency |
| 10 - 20 | 15 |
| 20 - 30 | 25 |
| 30 - 40 | 20 |
| 40 - 50 | 12 |
| 50 - 60 | 8 |
| 60 - 70 | 5 |
| 70 - 80 | 3 |
More than cumulative frequency can be obtained by adding to the other frequencies in the reverse order.
| Class | Frequency | More than type | Cumulative Frequency |
| 10 - 20 | 15 | More than 10 | 88 (= 73 + 15) |
| 20 - 30 | 25 | More than 20 | 73 (= 48 + 25) |
| 30 - 40 | 20 | More than 30 | 48 (= 28 + 20) |
| 40 - 50 | 12 | More than 40 | 28 (= 16 + 12) |
| 50 - 60 | 8 | More than 50 | 16 (= 8 + 8) |
| 60 - 70 | 5 | More than 60 | 8 (= 3 + 5) |
| 70 - 80 | 3 | More than 70 | 3 |
This material is intended as a summary. Use your textbook for detail explanation.
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