how to sum groups of 7 cells

[Dermot]

If I have cells B4 to B250 filled with numbers and I want to sum every seven
cells (B4:B10, B11:B17, etc...). How can I do it such that in I4 is the sum
of the 1st seven, I5 the sum of the second 7, and so on.
I know I can do it manually but I have so many to do that I really need an
automated way of doing it.
Thank you in advance!

 

[T. Valko]

Enter this formula in I4 and copy down as needed:

=SUM(OFFSET(B$4,(ROWS(I$4:I4)-1)*7,,7))

 

[Dermot]

Thank you!

What is the difference between the Offset Function and the Index Function?

 

[Max]

What is the difference between the Offset Function and the Index Function?
Offset is volatile while Index is not
--
Max
Singapore
http://savefile.com/projects/236895
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