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Find the Mean Deviation About the Median for the Data 15 21 27 30 35 - Mathematics

Find the mean deviation about the median for the data

xi

15

21

27

30

35

fi

3

5

6

7

8

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Solution

The given observations are already in ascending order.

Adding a column corresponding to cumulative frequencies of the given data, we obtain the following table.

xi fi c.f.

15

3

3

21

5

8

27

6

14

30

7

21

35

8

29

Here, N = 29, which is odd.

 |xi – M|

15

9

3

0

5

 fi

3

5

6

7

8

 fi |xi – M|

45

45

18

0

40

 

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APPEARS IN

NCERT Class 11 Mathematics Textbook
Chapter 15 Statistics
Q 8 | Page 360
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