A1: =SUMPRODUCT(--(MOD(COLUMN(8:8),4)=2),8:8)
B1: =SUMPRODUCT(--(MOD(COLUMN(Sheet1!8:8),4)=2),--(ISNUMBER(Sheet1!8:8)))

--

HTH

RP
(remove nothere from the email address if mailing direct)


"Hugh Murfitt" wrote in message
...
I have a spreadsheet which will build up over the next few weeks with each
week's results adding four columns of data to the sheet - sheet1.

I then want to perform analysis on the data in another sheet - sheet2

eg. In cell A1: SUM(sheet1!B8,sheet1!F8,sheet1!J8,etc,
and in cell B1: COUNT(sheet1!B8,sheet1!F8,sheet1!J8,etc,
etc

Is there a way of calculating "every 4th cell" in a row. There will be
several weeks of data and doing this long-hand (as above) is time
consuming.
I don't yet know how many weeks of data there will be and I don't want to
have to add extra terms to the COUNT, SUM, etc each time I add a new week.

Perhaps there is a way of creating a Range of this nature.? I clutch at
straws. Can you help?