The final marks in mathematics of 30 students are as follows:
53, 61, 48, 60, 78, 68, 55, 100, 67, 90
75, 88, 77, 37, 84, 58, 60, 48, 62, 56
44, 58, 52, 64, 98, 59, 70, 39, 50, 60
Arrange these marks in the ascending order,30 to 39 one group, 40 to 49 second group, etc.
Given:
The final marks in mathematics of 30 students are:
53, 61, 48, 60, 78, 68, 55, 100, 67, 90
75, 88, 77, 37, 84, 58, 60, 48, 62, 56
44, 58, 52, 64, 98, 59, 70, 39, 50, 60
To do:
We have to arrange the marks in ascending order.
Solution:
Arranging in ascending order:
$37, 39, 44, 48, 48, 50, 52, 53, 55, 56, 58, 58, 59, 60, 60, 60, 61, 62, 64, 67, 68, 70, 75, 77, 78, 84, 88, 90, 98, 100$
| Class | Frequency |
| 30-39 | 2 |
| 40-49 | 3 |
| 50-59 | 8 |
| 60-69 | 8 |
| 70-79 | 4 |
| 80-89 | 2 |
| 90-99 | 2 |
| 100-109 | 1 |
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