Question

12. Calculate average marks of the students
Marks
No. of
Students
10
24
30
50
16
6
4
0-10
10-20
20-30
30-40
40-50
50 - 60
60-70
​

Answer 1

Answer:

20

Explanation:

add all and then divide with the no. of students.

Answer 2

The answer is 20
How you do it is just add all of them and divide with no of the students