Choose the correct answer from the given four options: For the fo… - Vidyadip

MCQ

Choose the correct answer from the given four options:
For the following distribution:

Marks	Number of students
Below 10	3
Below 20	12
Below 30	27
Below 40	57
Below 50	75
Below 60	80

the modal class is:

A
10-20
B
20-30
✓
30-40
D
50-60

✓

Answer

Correct option: C.

30-40

Here,

Marks	Number of students	Cumulative frequency
Below 10	3 = 3	3
10-20	(12 - 3) = 9	12
20-30	(27 - 12) = 15	27
30-40	(57 - 27) = 30	57
40-50	(75 - 57) = 18	75
50-60	(80 - 75) = 5	80

Here, we see that the highest frequency is 30. which lies in the inteval 30-40.

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