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प्रश्न
In a Mathematics test, the following marks were obtained by 40 students. Arrange these marks in a table using tally marks.
| 8 | 1 | 3 | 7 | 6 | 5 | 5 | 4 | 4 | 2 |
| 4 | 9 | 5 | 3 | 7 | 1 | 6 | 5 | 2 | 7 |
| 7 | 3 | 8 | 4 | 2 | 8 | 9 | 5 | 8 | 6 |
| 7 | 4 | 5 | 6 | 9 | 6 | 4 | 4 | 6 | 6 |
How many students obtained marks below 4?
उत्तर
| Marks | Tally Marks | Number of Students |
| 1 | || | 2 |
| 2 | ||| | 3 |
| 3 | ||| | 3 |
| 4 | `\cancel(||||)` || | 7 |
| 5 | `\cancel(||||)` | | 6 |
| 6 | `\cancel(||||)` || | 7 |
| 7 | `\cancel(||||)` | 5 |
| 8 | |||| | 4 |
| 9 | ||| | 3 |
The students who got marks below 4 are the students who got marks as either 1, 2 or 3 marks.
Therefore, the number of these students
= 2 + 3 + 3
= 8
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संबंधित प्रश्न
Organise the following marks in a class assessment, in a tabular form.
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- What is the range of the data?
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Observations
Define the following term:
Frequency of an observation
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| 6, | 3, | 5, | 6, | 4, | 3, | 2, | 5, | 4, | 2, | 4, | 2, | 1, | 2, | 2, |
| 0, | 5, | 4, | 6, | 1, | 6, | 0, | 5, | 3, | 6, | 1, | 5, | 5, | 2, | 6 |
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0, 5, 7, 10, 12, 15, 20, 22, 25, 27, 8, 11, 17, 3, 6, 9, 17, 19, 21, 29, 31, 35, 37, 40, 42,45, 49, 4, 50, 16.
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