Question

calculate the mean mean for the for the frequency distribution C-1,5-9,10-14,15-19,20-24,25-29,30-34. Frequency,3,4,8,10,3,2​

Answer 1

Answer:

the mean mean for the for the frequency distribution C-1,5-9,10-14,15-19,20-24,25-29,30-34. Frequency,3,4,8,10,3,2

Answer 2

Answer:

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