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Question
Given below are the marks obtained by 30 students in an examination:
| 08 | 17 | 33 | 41 | 47 | 23 | 20 | 34 |
| 09 | 18 | 42 | 14 | 30 | 19 | 29 | 11 |
| 36 | 48 | 40 | 24 | 22 | 02 | 16 | 21 |
| 15 | 32 | 47 | 44 | 33 | 01 |
Taking class intervals 1-10, 11-20, ....., 41-50; make a frequency table for the above distribution.
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Solution
The frequency table for the given distribution is
| Marks | Tally Marks | Frequency |
| 1-10 | |||| | 4 |
| 11-20 | `cancel(||||) |||` | 8 |
| 21-30 | `cancel(||||) |` | 6 |
| 31-40 | `cancel(||||) |` | 6 |
| 41-50 | `cancel(||||) |` | 6 |
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| 50 – 60 | 12 |
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- What is the frequency of the third class?
- Which interval has a frequency of 10?
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