In Column A I have the ages of a random number of people.  I need to
take the median of the top 25% of this list.  First I sorted the list,
and now i need to run Median(A1:AX) Where X is the cell that equals 25%
of my total population.  My problem is the population(and thus the
number of rows used) is constantly changing.  How can I put in a value
for AX into this equation? Thanks in advance.
Karl