On Mon, 9 Mar 2009 12:36:39 -0700, Nick M
wrote:

Thats the question I need answered!

When you wrote "Tried your formula but it returns incorrect averages", it would
have been helpful to know exactly what formula you tried! And what answers you
were obtaining and what answers you expected.

I calculated these manually.
Oops, you are correct, the result in the first row should be 5.666666
and the 3rd row s/be 4.5
--ron