Question

to 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
7
40-50
More than 50
3

Answer 1

Answer:

8.3

Explanation:

total students - 50

total class sizes - 6

their mean = 50/6 or 8.3

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