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From |
Natalie Trapp <natalie.trapp@zmaw.de> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: Comparison of the R-squared in a loglog and linear model |

Date |
Thu, 17 Jun 2010 12:01:36 +0200 |

Thank you Maarten.

On 6/17/2010 11:49 AM, Maarten buis wrote:

--- On Thu, 17/6/10, Natalie Trapp wrote:I would like to compare the R-squared of a log log model and a linear model to find out which has the better fit. Is there a tool in Stata with which I can compare the R-square of the log log model with the R-square obtained from OLS estimation of the linear model?Comparing R-squares only makes sense when you don't change the dependent variable: the proportion of variance explained depends both the how much you explain and on how much variance you had to begin with. A non-linear transformation like taking the logarithm will influence the variance of your dependent variable, making the R-squares of the linear model and the log-log model incomparable. Hope this helps, Maarten -------------------------- Maarten L. Buis Institut fuer Soziologie Universitaet Tuebingen Wilhelmstrasse 36 72074 Tuebingen Germany http://www.maartenbuis.nl -------------------------- * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

* * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

**Follow-Ups**:**Re: st: Comparison of the R-squared in a loglog and linear model***From:*Richard Goldstein <richgold@ix.netcom.com>

**References**:**Re: st: Comparison of the R-squared in a loglog and linear model***From:*Maarten buis <maartenbuis@yahoo.co.uk>

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