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 Tools for Microsoft .Net & .Net Compact Framework
 QCMatPack Matrix and Analysis Tools (C# and VB)
 binary variable using MulReg
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danagonistes

1 Posts

Posted - 09 Sep 2009 :  15:49:36  Show Profile  Reply with Quote
How would you represent a variable with values of 1 or 0 in a multiple regression using the StepwiseMulReg class? If I set the value to 0, then the entire set of observations is thrown out. Along the same lines, if a value really is zero (say a percentage) then how would you be able to include it in the regression.

Is there something I'm missing?

Thanks

quinncurtis

1534 Posts

Posted - 09 Sep 2009 :  16:02:02  Show Profile  Reply with Quote
We aren't exactly sure what you mean.

Are you saying that you have an independent variable, that has a value of either 0, or 1 (no fractions)? And when you run a stepwise regression the variable is always deemed insignificant and left out of the final equation?

Is the binary variable significant? How do you know? If you run a standard multiple regression (NOT stepwise) on the data, including all variables, what is the F-STAT value for the binary independent variable.
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