Question

Calculate Mean from the following data:- (3)
Wages (is Rs.) 1-5, 6-10, 11-15, 16-20, 21-25
No. of workers 5, 7, 10, 6, 2

Answer 1

Explanation:

Marks(I)

15-19

20-24

25-29

30-34

35-39

40-44

x

i

17

22

27

32

37

42

f

i

6

5

9

12

6

2

f

i

x

i

102

110

243

384

222

84

x

ˉ

=

∑f

i

∑f

i

x

i

=

40

1145

=57.25