Question

calculate mean for the following data

c.I
0-2
2-4
4-6
6-8
8-10
10-12
12-14

f

1
2
1
5
6
2
3​

Answer 1

class marks. FiXi

1. 1

3. 6

5. 5

7. 35

9. 54

11. 22

13. 39

Total>. 163

mean=. FiXi/Fi. =163/20= 8.15

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