Find out the median.

S. No. 1 2 3 4 5 6 7 8 9

Marks Obtained 10 12 14 17 18 20 21 30 32

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Solution

10, 12, 14, 17, 18, 20, 21 30, 32

N = 9
$Median = {(\frac{N + 1}{2})}^{th} item Median = {(\frac{9 + 1}{2})}^{th} = 5^{th} item$
Thus, Median is given by the size of the 5^thitem. Therefore, Median of the data so given is 18.

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