So after reading, and editing all the various feedback the formula below is
what I came up with. When entered as an array it seems to work PERFECTLY, and
I tested it several times. If anyone has any final feedback on what I wrote
please let me know (I always appreciate feedback). It still seems a bit
sloppy, but unlike what I started with, this does work to provide me with the
average days it takes for Barb B to close out her files (for all files turned
in between July 1, 2009-September 30, 2009):

=IF(COUNTIF('Raw Data'!$H$4:$H$5000,"Barb B"),SUMPRODUCT(('Raw
Data'!$A$4:$A$5000=DATE(2009,7,1))*('Raw
Data'!$A$4:$A$5000<=DATE(2009,9,30)))*AVERAGE(IF(' Raw
Data'!$H$4:$H$5000="Barb B",'Raw Data'!$C$4:$C$5000)),"")

"Danny Boy" wrote:

Just for clarification, here is an example of where I was able to incorporate
"date parameters" and the formula worked just as I wanted it to. And yes I am
using Cell A4 to reflect the date, and I am using Excel 2007. The formula
below works perfectly:

=SUMPRODUCT(('Raw Data'!$A$4:$A$5000=DATE(2009,7,1))*('Raw
Data'!$A$4:$A$5000<=DATE(2009,9,30)*(('Raw Data'!$H$4:$H$5000="Barb
B")*(('Raw Data'!$D$4:$D$5000="LATE")))))

However, when I tried to do the exact same thing in my other two formulas
(see example below), I kept getting error messages:

=SUMPRODUCT(('Raw Data'!$A$4:$A$5000=DATE(2009,7,1))*('Raw
Data'!$A$4:$A$5000<=DATE(2009,9,30)*('Raw Data'!$H$4:$H$5000,"Barb
B"),AVERAGE(IF('Raw Data'!$H$4:$H$5000="Barb B",'Raw Data'!$C$4:$C$5000)),"")

=SUMPRODUCT(('Raw Data'!$A$4:$A$5000=DATE(2009,7,1))*('Raw
Data'!$A$4:$A$5000<=DATE(2009,9,30)*('Raw
Data'!$F$4:$F$5000,"OP"),AVERAGE(IF('Raw Data'!$F$4:$F$5000="OP",'Raw
Data'!$C$4:$C$5000)),"")

Again thank you for any help.....So far the suggestions don't seem to be
generating outcomes without errors.

Dan