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 2, then the median of the new set....
is decreased by 2
is two times the original median
remains the same as that of the original set
is increased by 2
Total number of element = 9
When all numbers are arranged in numerical order, then median will be
Now, when the largest 4 numbers are increased by 2 , it does not alter the 5th observation.
Hence median will be same as before i.e. 20.5