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प्रश्न
The marks scored in a test by 40 students of a class are recorded below:
| 46 | 51 | 36 | 46 | 65 | 73 | 28 | 45 | 38 | 58 | 63 | 62 | 52 | 69 |
| 42 | 68 | 54 | 54 | 55 | 39 | 48 | 71 | 68 | 32 | 53 | 50 | 34 | 72 |
| 41 | 61 | 41 | 53 | 46 | 66 | 35 | 43 | 59 | 41 | 26 | 45 |
Prepare a grouped frequency distribution table taking classes 21- 30, 31 - 40, ...
योग
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उत्तर
| Marks | Tally Marks | Frequency |
| 21 - 30 | `bb|bb|` | 2 |
| 31 - 40 | `cancel(bb|bb|bb|bb|) bb|` | 6 |
| 41 - 50 | `cancel(bb|bb|bb|bb|) cancel(bb|bb|bb|bb|) bb|bb|` | 12 |
| 51 - 60 | `cancel(bb|bb|bb|bb|) bb|bb|bb|bb|` | 9 |
| 61 - 70 | `cancel(bb|bb|bb|bb|) bb|bb|bb|` | 8 |
| 71 - 80 | `bb|bb|bb|` | 3 |
| Total | 40 |
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