Try this *array* formula for data in A1 to Z1:

=AVERAGE(Z1:INDEX(A1:Z1,LARGE(COLUMN(A1:Z1)*(A1:Z1 <""),8)))

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Array formulas are entered using CSE, <Ctrl <Shift <Enter, instead of the
regular <Enter, which will *automatically* enclose the formula in curly
brackets, which *cannot* be done manually.

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HTH,

RD
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Please keep all correspondence within the Group, so all may benefit!
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"Big H" wrote in message
...
Hi Biff,

The data is in the row and if there is a zero, i would want to include it in
the calculation

thanks Harry

"Biff" wrote in message
...
Hi!

So, what you want to do is average the last 8 entries, correct?

Is the data in a column or a row?

Are there any empty cells within the range?

Biff

"Big H" wrote in message
...
Hi There,

I have a spreadsheet that each week i have to average the last 8 week
inputs, as you can image each week the last 8 weeks information changes.
Any help would be appreciated.

thanks Big H