The median of set of 9 distinct observations is 20.5. If each of the largest 4 observations of the set is increased by 2, then the median of the new set
A. is increased by 2
B. is decreased by 2
C. is two times of the original number
D. Remains the same as that of the original set.
Answer:D
The median of set of 9 distinct observations is 20.5. If each of the largest 4 observations of the set is increased by 2, then the median of the new set
A. is increased by 2 B. is decreased by 2 C. is two times of the original number D. Remains the same as that of the original set.