Find the median of the following numbers
$11, 13, 8, 10, 15, 18, 12, 7, 9, 16$

12

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11

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11.5

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12.5

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Solution

The correct option is C $11.5$
First arrange the number in a order
$7, 8, 9, 10, 11, 12, 13, 15, 16, 18$
There are 10 numbers so middle numbers are 11,12.
$∴ M e d i a n = \frac{11 + 12}{2} = \frac{23}{2} = 11.5$

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