The marks obtained by 50 students of a class in class 8 of a school in subject mathematics paper consisting of 100 marks are presented in table below.
Find the mean of marks obtained by the students.
Marks Obtained | Number of Students |
10 | 1 |
20 | 3 |
36 | 2 |
40 | 3 |
50 | 8 |
60 | 8 |
70 | 5 |
72 | 9 |
80 | 3 |
85 | 4 |
90 | 1 |
93 | 2 |
97 | 1 |