Hi Bram,
See http://www.mvps.org/dmcritchie/excel...ol.htm#snkAddr

B1: =stdev(OFFSET($A$1,6*ROW()-5,0):OFFSET($A$1,6*ROW(),0))
B2: =stdev(OFFSET($A$1,6*ROW()-5,0):OFFSET($A$1,6*ROW(),0))

It was easier to test and verify using SUM instead of stdev, but the formula is same
NOTE the formulas are in a different column than the data.
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HTH,
David McRitchie, Microsoft MVP - Excel [site changed Nov. 2001]
My Excel Pages: http://www.mvps.org/dmcritchie/excel/excel.htm
Search Page: http://www.mvps.org/dmcritchie/excel/search.htm

"Bram" wrote in message ...
example
cell A1 contains formula "=stdev(a2:a7)
cell a2 contains formula "=stdev(a8:a13)
Is it possible to drag the formula down so that cell a3 contains
"=stdev(a14:19) and cell a4 contains "=stdev(a20:a25) and so on for cells a5,
a6, a7 etc. etc.