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Question: Answered & Verified by Expert
The median of a set of 9 distinct observations is 20.5 . If each of the largest 4 observation of the set is increased by 2 , then the median of the new set
MathematicsStatisticsJEE Main
Options:
  • A Is increased by 2
  • B Is decreased by 2
  • C Is two times the original median
  • D Remains the same as that of the original set
Solution:
2397 Upvotes Verified Answer
The correct answer is: Remains the same as that of the original set
Since $n=9$, then median term $=\left(\frac{9+1}{2}\right)^{\text {th }}=5^{\text {th }}$ term .
Now, last four observations are increased by 2 .
$\because$ The median is $5^{\text {th }}$ observation, which is remaining unchanged.
$\therefore$ There will be no change in median.

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