$34, 66, 30, 38, 44, 50, 40, 60, 42, 51$ .

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Solution

The given data is $34, 66, 30, 38, 44, 50, 40, 60, 42, 51$ .
Number of values $= 10$
sum of the values $= 34 + 66 + 30 + 38 + 44 + 50 + 40 + 60 + 42 + 51$
$= 455$
Arithmetic mean $= \frac{sum of values}{No. of values}$
$= \frac{455}{10}$
$= 45.5$

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Calculate the mean deviation about the median of the following observations :

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(ii) 38, 70, 48, 34, 42, 55, 63, 46, 54, 44

(iii) 34, 66, 30, 38, 44, 50, 40, 60, 42, 51

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