Mathematics
Given :
| Marks obtained | Number of students |
|---|---|
| Less than 20 | 20 |
| Less than 30 | 30 |
| Less than 40 | 40 |
For the data, given above, the less than cumulative frequency for less than 40 is :
90
40
50
70
Statistics
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Answer
Given,
Table :
| Marks obtained | Number of students |
|---|---|
| 0 - 20 | 20 |
| 0 - 30 | 30 |
| 0 - 40 | 40 |
Converting table :
| Marks obtained | Number of students |
|---|---|
| 0 - 20 | 20 |
| 20 - 30 | 10 (30 - 20) |
| 30 - 40 | 10 (40 - 30) |
So, students scoring less than 40 marks :
20 + 10 + 10 = 40.
Hence, Option 2 is the correct option.
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