One way;

=Sumif(E:E,"m",I:I)/Countif(E:E,"m")


--
HTH,

RD

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"frequency function with decimals"
ft.com wrote in message
...
I have 5 different columns entitled Sex, Age, Bed Time, Wake Up, and Total
Sleep. In the Sex column (column E) I have entered either "m" or "f" for
male
or female. Four columns to the right of this (column I) is the column
called
"Total Sleep." My question is I want to take the average of the cells in
Column I ("total sleep") only if in Column E ("Sex") there is an "m"
present.
Can you tell me the formula to do this?