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The median of a set of 9 distinct observ...

The median of a set of 9 distinct observations is 20.5. If each of the largest 4 observations of the set is increased by 4, then the median of the new set

A

in increased by 4

B

is decreased by 4

C

is two times the original median

D

remains the same as that of the original set

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The correct Answer is:
D
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