Rolling averages (automate for a rolling 12 weeks)

Solved thank you

Are there dates anywhere that could be used?

There are instructions at the top of the page explaining how to attach your sample workbook.

Thank you

there is a date and a week number above each column.

The week number is custom formated to show wk1, wk2 etc.

I hope this attachment works how hard can it be to attach a file :-)

It is not clear to me, but below solutions may help:

For first 12 Wk of the year:

=AVERAGEIF($C$5:$Q$5,"<=12",C6:Q6)

For Weeks within,i.e, 5 and 7:

=AVERAGEIFS(C6:Q6,$C$5:$Q$5,">=5",$C$5:$Q$5,"<=7")

For last 12 weeks from the last week (wk 15 as per in sample)

=AVERAGEIFS(C6:Q6,$C$5:$Q$5,"<="&MAX($C$5:$Q$5),$C$5:$Q$5,">="&MAX($C$5:$Q$5)-11)

thank you all sorted now.

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