Assume you have numbers in A1:A10,
and certain cells marked as "X" within B1:B10

We could try in say, C1, array-entered
(i.e press CTRL+SHIFT+ENTER):

=AVERAGE(IF(B1:B10="X",A1:A10))

which will evaluate the average of only those numbers in col A
corresponding to the "x" marked in col B
--
Rgds
Max
xl 97
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Singapore, GMT+8
xdemechanik
http://savefile.com/projects/236895
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"plindsay" wrote in message
...
Does anyone know how to create an average if function similiar to a SUMIF
function? I'm not that familiar with VBE so I believe this is out of my
league. Any advice would be helpful.

Regards