Question

The median of a set of nine distinct observations is 20.5. If each of the last four observations of the set is increased by 2, then the median of the new set is
A. Is increased by 2
B. In decreased by 2
C. Is two times the original median
D. Remains the same as that of the original set

Answer 1

Correct Answer - D
Since n=9, median term`=((9+1)/(2))^(th)`=5th term.
Now, the last four observations are increased by 2. Since the median is the 5th observation, which remains unchanged, there will be no change in median.