Question

Illustration 5. Following tables gives the marks obtained by 100 students in a class.
Calculate the arithmetic mean.
Marks
10
20
30
40
50
No. of Students
5
10
40
25
20​

Answer 1

Answer:

the answer is 30

Explanation:

arithmetic mean = sum of the marks

no of marks

= 10+20+30+40+50

5

= 150

5

= 30