Need help finding Average cost per square metre

Need help finding "Average cost per square metre". Can't think of how to do this. Any help is very appreciated.

Also, the cells labeled "Hallway Total" and "Deck Total", are all their parts added up.

This will find the average:

=SUM($F$5:$G$24)/COUNT($F$5:$F$24)

Your division by 18 is incorrect! F5 to F24 is 20.

No, but your count is still wrong - it should be 19.

Try this:

=(SUMIF($A$5:$A$24,"<>Hallway Total",$F$5:$F$24)+SUMIF($A$5:$A$24,"<>Hallway Total",$G$5:$G$24))/COUNT($B$5:$B$24)

If that takes care of your original question, please select Thread Tools from the menu link above and mark this thread as SOLVED. Thanks.

The sections in red:

=(SUMIF($A$5:$A$24,"<>Hallway Total",$F$5:$F$24)+SUMIF($A$5:$A$24,"<>Hallway Total",$G$5:$G$24))/COUNT($B$5:$B$24)

If you use Evaluate Formula on the Formulas ribbon to step through the formula, you will see how it works. SUMIF and SUMIFS help you to sum ranges with criteria. In this case, "<>Hallway Total" means ignore any row with Hallway Total in column A.

You're welcome!

Please mark the thread as solved as requested in post #6.

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