The median of the data 9, 12, 11, 10, 8, 9, 11 is

(a) 10 (b) 11 (c) 9 (d) None of these

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Solution

Arranging the given data in increasing order, we get
8, 9, 9, 10, 11, 11, 12
As the number of observations is odd (7), the median is the middle term which is 10.
Hence, the correct option is (a).

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