I've almost put this together, but figured I'd ask here. It's mostly just a set of functions, most likely.

I have a spreadsheet that has these columns:

Month, Unimportant,Year,Blah,Blah,Blah,Target

What I'm trying to do is average Target for every month/year combination.

AverageIf gets me close, but I don't know what to put into the criteria, or if this isn't the right approach.

Any suggestions?