In the following set of numbers, what is the median?
>$$\{21, \ 55, \ 72, \ 68, \ 10, \ 45\}$$

Incorrect.
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This is a trap option. Put the numbers in order before finding the median.

Incorrect.
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Incorrect.
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Incorrect.
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Correct.
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Arrange the numbers in increasing order:
>$$\{10, \ 21, \ 45, \ 55, \ 68, \ 72\}$$.
Since 45 and 55 are the middle values, the median is
>$$\text{Median} = \frac{45 + 55}{2} = \frac{100}{2} = 50$$.

21

45

50

68

70