If you're getting #DIV/0! then that means there are no entries in column H
that meet the criteria. Try this array formula** :

=IF(SUM(COUNTIF(H13:H36,{"in","ti"})),ROUND(AVERAG E(IF(H13:H36={"in","ti"},E13:E36)),0),"")

** array formulas need to be entered using the key combination of
CTRL,SHIFT,ENTER (not just ENTER)

If there are no dates in column E then the result will be 0 (formatted as
date will display as 1/0/1900)

--
Biff
Microsoft Excel MVP


"Christy" wrote in message
...
How would I alter this using ROUND? Also, when cells are blank I would
like
it if the cell that contained this formula didn't say #DID/O! but was just
blank.
Thanks.

"T. Valko" wrote:

=INT(AVERAGE(IF((H13:H36={"in","ti"}),E13:E36)))

Using ROUND would be more accurate.

--
Biff
Microsoft Excel MVP


"Teethless mama" wrote in
message
...
=INT(AVERAGE(IF((H13:H36={"in","ti"}),E13:E36)))

ctrl+shift+enter, not just enter


"Christy" wrote:

I'm trying to do the following:
Col E Col H
9/17/08 in
9/18/08 ti
9/19/08 ot
When H13:H36 = in and H13:H36 = ti, Then return the average date from
E13:E36.
Thanks in advance for any help.
Christy