Mathematics
For the following frequency distribution :
| Marks | No. of students |
|---|---|
| below 10 | 7 |
| below 20 | 20 |
| below 30 | 50 |
| below 40 | 60 |
| below 50 | 70 |
Assertion (A) : The modal class is 40-50.
Reason (R) : The modal class is the class of maximum frequency.
A is true, R is true
A is false, R is false
A is true, R is false
A is false, R is true
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Answer
| Marks | No. of students |
|---|---|
| 0-10 | 7 |
| 10-20 | 20 - 7 = 13 |
| 20-30 | 50 - 20 = 30 |
| 30-40 | 60 - 50 = 10 |
| 40-50 | 70 - 60 = 10 |
We know that,
The modal class is the class of maximum frequency.
∴ Modal class = 20-30.
∴ A is false, R is true.
Hence, Option 4 is the correct option.
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