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Find the Mean Deviation About Median for the Following Data: Marks and Number of Girls - CBSE (Arts) Class 11 - Mathematics

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Question

Find the mean deviation about median for the following data:

Marks

Number of girls

0-10

6

10-20

8

20-30

14

30-40

16

40-50

4

50-60

2

Solution

The following table is formed.

Marks

Number of girls fi

Cumulative frequency (c.f.)

Mid-point xi

|xi – Med.|
 

fi |xi – Med.|

0-10

6

6

5

22.85

137.1

10-20

8

14

15

12.85

102.8

20-30

14

28

25

2.85

39.9

30-40

16

44

35

7.15

114.4

40-50

4

48

45

17.15

68.6

50-60

2

50

55

27.15

54.3

 

50

     

517.1

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Solution Find the Mean Deviation About Median for the Following Data: Marks and Number of Girls Concept: Mean Deviation.
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