Question

The marks in science of 80 students of class X are given below: Find the mode of the marks obtained by the students in science.

Marks:	0−10	10−20	20−30	30−40	40−50	50−60	60−70	70−80	80−90	90−100
Frequency:	3	5	16	12	13	20	5	4	1	1

Answer 1

Marks	0−10	10−20	20−30	30−40	40−50	50−60	60−70	70−80	80−90	90−100
Frequency	3	5	16	12	13	20	5	4	1	1

Here, the maximum frequency is 20 so the modal class is 50−60.

Therefore,

Now,

Thus, the mode of the marks obtained by the students in science is 53.17.