Find the mean of the following data:

Classes

Frequency

0-10

10-20

20-30

30-40

7

3

15

5

 

Asked by Topperlearning User | 4th Jun, 2014, 01:23: PM

Expert Answer:

Classes

Class Mark (xi)

Frequency (fi)

fixi

0-10

10-20

20-30

30-40

5

15

25

35

7

3

15

5

35

45

375

175

 

 

Mean =

Answered by  | 4th Jun, 2014, 03:23: PM