Question

The frequency distribution of marks obtained by 60 students of a class in a college is given below:

Marks	30−34	35−39	40−44	45−49	50−54	55−59	60−64
No. of Students	3	5	12	18	14	6	2

Answer 1

Converting the inclusive class intervals into exclusive class intervals, as given below:

Marks	No. of students
29.5 − 34.5 34.5 − 39.5 39.5 − 44.5 44.5 − 49.5 49.5 − 54.5 54.5 − 59.5 59.5 − 64.5	3 5 12 18 14 6 2