The mean  deviation of the numbers 3, 4, 5, 6, 7 is

  • Option 1)

    0

  • Option 2)

    1.2

  • Option 3)

    5

  • Option 4)

    25

 

Answers (1)
N neha

As we learned

 

Mean Deviation -

If x1, x2, x3,.......xn have frequencies f1, f2....fn then mean deviation :

 \frac{\sum f_{i}\left | x_{i}-A \right |}{\sum f_{i}}

-

 

 Mean\bar{x}=\frac{3+4+5+6+7}{5}=5

N=5

            x                   |x-\bar{x}|

            3                        2

            4                        1

            5                        0

            6                        1

            7                        2

\sum |x-\bar{x}|=6

 mean deviation from the mean

=\frac{\sum |x-\bar{x}|}{N}=\frac{6}{5}=1.2


Option 1)

0

Option 2)

1.2

Option 3)

5

Option 4)

25

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