One way...

Assume data starts in cell A2. Enter this formula in B2 and copy down:

=IF(MOD(ROWS(B$2:B2),5),"",AVERAGE(OFFSET(A2,,,-5)))

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Biff
Microsoft Excel MVP


"bill gras" wrote in message
...
Hi All

I have a column of 1020 rows with numbers , I need to average the sum
of every 5 rows down to 1020 rows eg-
a d
1 52
2 60
3 64
4 40
5 71 57.6
6 203
7 150
8 11
9 25
10 93 96.4

Can any one help me please
Thanks in advance
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bill gras