Be careful with this formula.

If you have 1X in A2 and B2 is empty or A2 is empty and B2 contains 1X, you may
not get the count you want.



Adjust the ranges to match--but you can't use whole columns (except in xl2007).

=sumproduct() likes to work with numbers. The -- stuff changes trues and falses
to 1's and 0's.

Bob Phillips explains =sumproduct() in much more detail he
http://www.xldynamic.com/source/xld.SUMPRODUCT.html

And J.E. McGimpsey has some notes at:
http://mcgimpsey.com/excel/formulae/doubleneg.html

S2 wrote:

Beautiful...& simple too! Thanks!

Quick q - what do the "--" mean/do?

"Teethless mama" wrote:

=SUMPRODUCT(--(A2:A5&B2:B5="1X"))


"S2" wrote:

Greetings all -
I have the following data:
A B
1 Pri State
2 1 X
3 2
4 1
5 3 X

For each value (Priority) in ColA, I need to know how many times "X" occurs
in State (ColB)

--

Dave Peterson