
Originally Posted by
MrShorty
The functionIFS() functions seem to not support 3D references. When I see this kind of question, I tend to see two possible approaches.
1) Do the condition part in a helper cell on each tab. =IF(L18<>0,L18,"") in any suitable helper cell. Then, on the summary tab, I can use =AVERAGE(sheet1:sheet10!helpercell).
or
2) compile all of the data into a single, good database. Then the summary functions like AVERAGEIFS() (or even pivot tables and similar tools) become much more effective.
Since this sort of thing really often boils down to good database management. As such, the 2nd option tends to be the better choice if you are willing to invest the time upfront. Make a good database, and future work with the data will be much easier.
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