Find the median for the following data.

7, 8, 9, 9, 10, 9, 7, 4

7.5

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9.5

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10.5

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8.5

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Solution

The correct option is D 8.5
After arranging the data we get,

4, 7, 7, 8, 9, 9, 9, 10

Here we have 8 items. The value of N is 8 (even).

Therefore, median is the average of the two middle terms, which are 8 and 9.

Median = $\frac{(8 + 9)}{2}$
= 8.5

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i) 13, 17, 16, 14, 11, 13, 10, 16, 11, 18, 12, 17

i i) 36, 72, 46, 42, 60, 45, 53, 46, 51, 49

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