John, I understand. I'll plow away at the problem in here in hopes
that you will stick with me for a while and not get irritated with my
lack of mathematical expertise. I would like to use built-in Excel
functions as much as possible to speed the calculation. Your first
step, "Calculate the mean". Would I use Excel's AVERAGE function for
this? Say column M contains 12,410 numbers, starting on row 2. Would
I then use a formula such as =AVERAGE(m2:m12411) to get the mean? A
friend has told me that what is really wanted is the "threshold to the
second quartile", so I'm confused. James

On Jul 9, 1:48?pm, wrote:
James,

Sorry, that email doesn't exist anymore. The programming is fairly
straight forward. I'll do what I can to help you, but if it isn't
something you are going to do on a regular basis....manual is the way
to go.

John