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Regression small numbers Rate Topic: -----

#1 User is offline   FrankM 

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Posted 17 August 2007 - 05:20 AM

I have a set of numbers, one side of the set is a larger number relative to the other one, but the changes to the one side are small relative to the other. Is it permissible to work with the residual to establish a trend line for the small changes?

21.720840 1.000058954
25.321081 1.000080116
29.518064 1.000108876
34.410700 1.000147960
40.114292 1.000201074
46.763259 1.000273254
54.514295 1.000371346
63.550070 1.000504649
74.083529 1.000685805

Can I subtract 1 and then strip off 3 decimals in the right column and work with that and the left column to establish a curve fit for the residual changes in the right column? Does this in anyway invalidate the curve fit?
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