Hi,

You can do it with a number of formulas:

=AVERAGE(INDIRECT("C"&12*ROW()-11&":C"&12*ROW()))

=AVERAGE(OFFSET(C$1,12*ROW()-12,,12))


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If this helps, please click the Yes button

Cheers,
Shane Devenshire


"Stibbz" wrote:

I need to calculate the average temperature of every year and I know the
formula is '=AVERAGE(C2:C13)' but how would I replicate this so I don't have
to type it into every cell to work it out. As the next one would be
'AVERAGE(C14:C25)

Any help would be greatly appreciated!

Thanks in advance
Sam