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Mean deviation:                                                                                                                      Bookmark and Share
 
 

It is defined as the arithmetic average or mean of the deviation of various items of a series computed from mean or median.

Or

It is the average difference between the items of a distribution and the mean or median of that series.

For an individual series

Mean deviation from mean or average =

Mean deviation from mean=

 

Example: To calculate the mean deviation from mean

Marks

Frequency (f)

Mid value (x)

fx

f

0-10

5

5

25

27

22

110

10-20

8

15

120

27

12

96

20-30

15

25

375

27

2

30

30-40

16

35

560

27

8

128

40-50

6

45

270

27

18

108

 

n =

 

 

 

 

 

Mean deviation = =  = 9.44

 

Download pdf file of mean deviation

 

 

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