Answer the following question

Dear Student,


Given that :-
 

Marks	Nos of Student
Less than 10	2
Less than 20	12
Less than 30	37
Less than 40	57
Less than 50	60

 

Marks	Frequency	Nos of Student (frequency)
0-10	2	2
10-20	=12-2=10	10
20-30	=37-12=25	25
30-40	=57-37=20	20
40-50	=60-57=3	3

Formula Used:-
Nos of Student in Class 10-20 = Nos of Student Obtain marks Less than 20 - Nos of Student obtain marks Less than 10.

Similarly For all Class of Marks.


Regards