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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 |
(a) Find how many students obtained marks equal to or more than7.
(b) How many students obtained marks below 4?
Asked by Granth Last Modified
Answer By observing the marks scored by 40 students in the test, we can construct the
table as follows.
| Mark | Tally mark | Number of Students |
| 1 |
| 2 |
| 2 |
| 3 |
| 3 |
| 3 |
| 4 |
| 7 |
| 5 |
| 6 |
| 6 |
| 7 |
| 7 |
| 5 |
| 8 |
| 4 |
| 9 |
| 3 |
(a) The students who obtained their marks equal to or more than 7 are the students who obtained their marks as either of 7, 8, and 9. Hence, number of these students = 5 + 4 + 3 = 12
(b) The students who obtained their marks below 4 are the students who
obtained their marks as either of 1, 2, and 3.
Hence, number of these students = 2 + 3 + 3 = 8
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