enter following formula at the bottom of your columns instead of simple
AVERAGE function.
suppose your data is in col A range(A1:A50), you should change this
range for each column.

=IF(ISERROR(AVERAGE(A1:A50)),"",AVERAGE(A1:A50))

marvinks Wrote:
Hi
I have 4 columns with an average function on the bottom, however not
all the columns are used all the time, resulting in an error (#DIV/0!).
How do I calculate the average only if the cells are used. If I don't
used one of the columns I would like it to stay blank or return 0
thanks
marvin


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