median function

[flyingmeatball]

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

 

[Guest]

try:

=MEDIAN(INDIRECT("A1:A"&INT(COUNTA(A:A)/4)))

This rounds down so that if there are 27 numbers, median is calculated as A1
to A6 ....should it be A1 to A7?

HTH

 

[Guest]

Let's say the ages are in A2:A26.

I'd use the following function

=MEDIAN(IF(A2:A26>QUARTILE(A2:A26,3),A2:A26))

COMMIT using CTRL SHIFT ENTER and you should see {} around the whole thing.

I'd probably use a named range with an offset to determine the dynamic range
for A2:A26, but that's another whole conversation. Check here for
information on dynamic ranges

http://www.cpearson.com/excel/named.htm