2016 · Q88
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
Elementary MathematicsStatistics
- Ais increased by 2
- Bis decreased by 2
- Cis two times the original median
- Dremains the same as that of original set
Explanation
With 9 distinct observations the median is the 5th smallest. Increasing the largest 4 observations cannot move the 5th value. So the median remains unchanged (option D).