JEE MAIN - Mathematics (2003 - No. 11)
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 increased by 2
is decreased by 2
is two times the original median
remains the same as that of the original set
Giải thích
Here total no of observation is 9 which is a odd number. As we know for odd number 9 the median will be the 5th term.
Now question says, you increase largest 4 number by 2 which does not affect the 5th term so the new median will be the same.
Now question says, you increase largest 4 number by 2 which does not affect the 5th term so the new median will be the same.