Does this *array* formula work for you:

=AVERAGE(IF(Z54:AD54<0,Z54:AD54))
?
Array formulas are entered using CSE, <Ctrl <Shift <Enter, instead of the
regular <Enter, which will *automatically* enclose the formula in curly
brackets, which *cannot* be done manually.

--
HTH,

RD
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Please keep all correspondence within the Group, so all may benefit!
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"ponygirl via OfficeKB.com" <u14421@uwe wrote in message
news:551c6af0b1c5e@uwe...
I am trying to do an average of values in a range of cells across colunms,
where only values other than zero are counted in the divisor. For example,
I
have 4000, 0, 0 in my range and I want it to average the sum by 1, and not
by
3 since the other two values are zero. If I then add a value in the
string,
as 4000, 2000, 0, my formula should then automatically average the sum by
2.
My formula is as follows:

=IF(ISERROR(+SUM(Z54:AD54)/(COUNTIF(Z54:AD54,"<0"))),0,(+SUM(Z54:AD54)/
(COUNTIF(Z54:AD54,"<0"))))

I have done this type of formula before using only positive values as in
"0"
and it has worked. However, this time I have both positive and negative
values and I want the formula to count all numbers other than zero in the
denominator. The problem is that even though I have specified not equal to
zero, i.e. "<0", is still counts zero as a number and divides by 3 as in
the
case of 4000, 0, 0. I have tried every variation that I can think of to
solve
this problem: "<0<", "0", "<"&"0", "<"&B4 (where the value in cell B4
is
zero) and nothing works. Can someone help me out on this?