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#1
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prove/audit SUMPRODUCT?
I am hoping that I am not the first person to have to do this, but I
can't find anything searching Google groups... I have some financial models which mock a relational database. The basic construction is data in tables and summary reports using SUMPRODUCT referencing dynamic ranges in the tables. I am now being asked to prove the formulas by generating another file which calculates all the reports the "old-fashioned way". Basically no one can audit my files because it is a "black-box" solution. Any ideas on how to prove or audit SUMPRODUCT without building a completely separate, non-dynamic model to test if the result is the same? TIA! |
#2
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What do you mean by "dynamic ranges"? How dynamic? Maybe you could give
us one example of a Sumproduct formula that you would like to calculate in a different way. - DH |
#3
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Here is a formula example from an HR database which calculates the
average Full-Time Equivalents. The row is the dept and the column is the period. =SUMPRODUCT((PosDeptNum=$A10)*(G$7<=PosEnd)*(PosSt art<G$8)*(((G$8<PosEnd)*G$8+(PosEnd<=G$8)*PosEnd)-((G$7<PosStart)*PosStart+(PosStart<=G$7)*G$7)-(PosStart<=G$7)*(G$8<PosEnd))/(G$8-G$7-1)) In order to "show my work" I would have to have a row for each individual and then use Subtotal for the departments, or have a different tab with the calculations for each individual, and then use a SUMIF on the departmental tab. There are new employees being added constantly, and employees departments can change so the creation of the middle step would be a manual process, or involve writing code, which I have also been asked not to do, for auditing purposes (not everyone knows VBA so again they can't see my work). thanks! |
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