The mean deviation of the numbers 1, 2, 3, 4, 5 is

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1.2

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1.4

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Solution

The correct option is C 1.2
Given distribution is, 1,2,3,4,5
Here $N = 5, ¯ x = 3$
Therefore mean deviation $= \frac{\sum | x - ¯ x |}{N} = \frac{2 + 1 + 0 + 1 + 2}{5} = 1.2$

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