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CBSE Class 9 Answered

Find the mean of the following frequency distribution showing the marks obtained in a class test by 20 students. Marks 10 15 20 25 No. of students 4 5 8 3  
Asked by Topperlearning User | 08 Dec, 2013, 11:08: PM
answered-by-expert Expert Answer

Marks (xi)

10

15

20

25

No. of students (fi)

4

5

8

3

fixi

40

75

160

75

 

Answered by | 09 Dec, 2013, 01:08: AM

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