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#1 Behnoud


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Posted 14 May 2008 - 02:13 PM

How I can do extrapolation with data I have added in Stat App.?

#2 PAP


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Posted 18 June 2008 - 08:03 AM

How I can do extrapolation with data I have added in Stat App.?

I don't use the Stat App much, so I can't help you on that. You can certainly do extrapolation by using a program in CPBasic (but I wouldn't even try that, given that CPBasic is... what it is). Another solution is to use the spreadsheet: one can do simple linear extrapolation by using the spreadsheet, but you have to enter the formula to do it, plus linear extrapolation should be generally avoided. If you can program on CPLua, my LNA interpolating functions offer extrapolation capabilities. For example, LNA's function CubicSpline is able to do extrapolation using many spline schemes. If you are interested, have a look at section 4.3 of the LNA programmer's guide.

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