This has probably been answered several times but I can't find an answer for the life of me. Apologies for that.
I have a formula in a cell:
=AVERAGE(B3:B14)
When I drag it down to autofill the formula reads:
=AVERAGE(B4:B15)
However I want the formula to jump by 12 rather than by 1 to say:
=AVERAGE(B15:B26)
Does that make sense? I have a long list of monthly data over many years and am calculating the annual average.
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