average over worksheets excluding zeros

Is the person's name separated with spaces?

Try:

=IF(ISERROR(AVERAGE('persons name:persons name'!h16)),"",AVERAGE('Persons name:persons name'!h16))

Note the apostrophe's

If as you say the Average is conditional (exclude zero H16 values) then if you're not prepared to utilise a Helper on each sheet then you're looking at pretty expensive / volatile SUMPRODUCT / Array formulae.

John McGimpsey has a page outlining a variety of approaches for conditional 3D calculations: http://www.mcgimpsey.com/excel/threedsumif.html

All of which can be adapted to conduct an Average - ie 3D SUM / 3D COUNTIF (<>0)

I took it as the OP is getting Div/0 error when the cells all have 0's or are blank..... and is trying to not have that error display...

Can you explain exactly what you need... ie. what is being averaged and based on what conditions, etc.

To best describe or illustrate your problem you would be better off attaching a dummy workbook, the workbook should contain the same structure and some dummy data of the same type as the type you have in your real workbook - so, if a cell contains numbers & letters in this format abc-123 then that should be reflected in the dummy workbook.

If needed supply a before and after sheet in the workbook so the person helping you can see what you are trying to achieve.

Doing this will ensure you get the result you need!

Try zipping it.. and keep the size below the allowable limit

Want to make sure I understand...

... if I enter this formula:

=AVERAGE('SPARE 1:SPARE 6'!H16)

I get a result, even if all H16 cells are 0... I get 0....

Am I misunderstanding you?

Ok. See attached.

First, if your actual sheet names do not have the pattern you show or similar... like if they are totally different, then list the sheetnames in your summary sheet somewhere... see P1:P6.. then name that list something like "TabNames", through Insert|Name|Define.

Then use formula:

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See H16.


If your sheets are named in a pattern similar to your sample, then no need to create a list and named range... just use formula as per:

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See P16.

An alternative that would work would be to install a free addin called Morefunc.xll from here: Morefunc


Then insert a blank sheet before all the named sheets and call this sheet 'Start' and insert another sheet just before your summary sheet and after all the named sheets and call this 'End' (without the quotes).

Then apply formula below:

=SUMPRODUCT(--(THREED(Start:End!H16)<>0),THREED(Start:End!H16))/SUMPRODUCT(--(THREED(Start:End!H16)<>0))

Now you can add and delete sheet between these "bookends" as you desire.