$22, 24, 30, 27, 29, 31, 25, 28, 41, 42$ .

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Solution

The given data is $22, 24, 30, 27, 29, 31, 25, 28, 51, 42.$
Number of values given $= 10$
Sum of the values $= 22 + 24 + 30 + 27 + 29 + 31 + 25 + 28 + 41 + 42$
$= 299$
Arithmetic mean $= \frac{sum of values}{no. of values}$
$= \frac{299}{10}$
$= 29.9$

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