Question

16.7 marks)
- Calculate the Arithmetic Mean of the following frequency distribution:
Marks
No. of students
Less than 10
4
10-20
6
20-30
20
30-40
10
40-50
7
More than 50
3
[Ans: 28.8 marks]

Answer 1

Answer:

8.33

Explanation:

Arithmetic mean = Sum of all observations / No. of observations

(4+6+20+10+7+3) / 6

50/6

=8.33