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Old 12-18-2012, 01:46 AM
Kevin@Radstock Kevin@Radstock is offline Windows 7 32bit Office 2010 32bit
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Hi Joe Ottenhof

Two methods assuming data is in A1:A1000:

1/ =SUMPRODUCT(--(MOD(ROW(A1:A1000),4)=0),A1:A1000)

2/ =SUM((MOD(ROW(A1:A1000),4)=0)*(A1:A1000))
This is an array formula: CTRL + SHIFT + ENTER

You can change what rows to sum, by changing the MOD part ie: =0 to = 1 or 2 etc

Kevin
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