Question

33. The marks obtained by 30 students of class 10 of a certain school in
mathematics of 100 marks are presented in the following table. Find
the mean of the marks obtained by the students by step deviation
method.
10-25
25-40
40-55
55-70
70-85
85-100
Class
Interval
No. of
students
2.
3
7
6
6
6​

Answer 1

Answer:

The Mean marks are 62.

Step-by-step explanation:

You can find the Step wise solution in the Image