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Still need help on annualized rolling sum
I am trying to calculate an annualized rolling sum for data as follows:
ColumA Column B 10/01/97 5 10/12/97 6 12/5/97 3 1/5/98 2 1/15/98 6 6/15/98 9 8/12/98 7 etc I want to be able to calculate on each date the sum of column B for the past year. |
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#2
Posted to microsoft.public.excel.worksheet.functions
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Still need help on annualized rolling sum
Assume your data goes from row 1 to 30, place this formula in C1 and drag down.
=SUMPRODUCT(--($A$1:$A$30<A1),--($A$1:$A$30=A1-365),$B$1:$B$30) -- Regards, Dave "Hunter" wrote: I am trying to calculate an annualized rolling sum for data as follows: ColumA Column B 10/01/97 5 10/12/97 6 12/5/97 3 1/5/98 2 1/15/98 6 6/15/98 9 8/12/98 7 etc I want to be able to calculate on each date the sum of column B for the past year. |
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