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Question
Form the frequency distribution table from the following data:
| Marks (out of 90) | Number of candidates |
| More than or equal to 80 | 4 |
| More than or equal to 70 | 6 |
| More than or equal to 60 | 11 |
| More than or equal to 50 | 17 |
| More than or equal to 40 | 23 |
| More than or equal to 30 | 27 |
| More than or equal to 20 | 30 |
| More than or equal to 10 | 32 |
| More than or equal to 0 | 34 |
Solution
| Marks (out of 90) | Number of candidates | C.I. | No. of Student |
| More than or equal to 80 | 4 | 0 – 10 | 34 – 32 = 2 |
| More than or equal to 70 | 6 | 10 – 20 | 32 – 30 = 2 |
| More than or equal to 60 | 11 | 20 – 30 | 30 – 27 = 3 |
| More than or equal to 50 | 17 | 30 – 40 | 27 – 23 = 4 |
| More than or equal to 40 | 23 | 40 – 50 | 23 – 17 = 6 |
| More than or equal to 30 | 27 | 50 – 60 | 17 – 11 = 6 |
| More than or equal to 20 | 30 | 60– 70 | 11 – 6 = 5 |
| More than or equal to 10 | 32 | 70 – 80 | 6 – 4 = 2 |
| More than or equal to 0 | 34 | 80 – 90 | 4 |
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