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MS Office Forum / Excel / New Users / July 2007Rounding to the odd
In meteorology it is the custom to round decimal numbers ending in .5 to the odd. For instance 2.55 becomes 2.3, while 2.35 also becomes 2.3. In Excel they are always rounded up, does anyone know a formulae that will correct this so that they are 'thrown' to the odd. TIA Lonnie Rounding is a bit tricky. Computers do binary math which complicates identifying numbers whose decimal fractions exactly end in 5, since most such decimal fractions have no exact binary representation and must be approximated. As a result, a single worksheet formula is unlikely to perform as expected in every instance. If you can deal with a user defined function written in VBA (you can call it from worksheet cells as though it was a worksheet function), then the one that I posted at http://groups.google.com/group/microsoft.public.excel.programming/msg/0d2dc7c322 cf4b3f should do the trick. Jerry > In meteorology it is the custom to round decimal numbers ending in .5 to the odd. For instance 2.55 becomes 2.3, while 2.35 also becomes 2.3. In Excel they are always rounded up, does anyone know a formulae that will correct this so that they are 'thrown' to the odd. > TIA [quoted text clipped - 3 lines] > ------= Binary Usenet downloading made easy =--------- > -= Get GrabIt for free from http://www.shemes.com/ =- This may point some direction..... =IF(ISEVEN(MID(A1,FIND(".",A1,1)+1,1)),ROUNDUP(A1,1),ROUNDDOWN(A1,1)) BTW, what criteria do you use to ROUND 2.55 to 2.3? Vaya con Dios, Chuck, CABGx3 > In meteorology it is the custom to round decimal numbers ending in .5 to the odd. For instance 2.55 becomes 2.3, while 2.35 also becomes 2.3. In Excel they are always rounded up, does anyone know a formulae that will correct this so that they are 'thrown' to the odd. > TIA [quoted text clipped - 3 lines] > ------= Binary Usenet downloading made easy =--------- > -= Get GrabIt for free from http://www.shemes.com/ =- |
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