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## Re: [Help-gsl] Computing R-square for linear regression

**From**: |
Barrett C. Foat |

**Subject**: |
Re: [Help-gsl] Computing R-square for linear regression |

**Date**: |
Tue, 25 Sep 2007 12:11:13 -0500 |

**User-agent**: |
KMail/1.9.3 |

R-sq. should be (1 - chi-square / SST),
where SST is the sum-squared total: the summed deviations between the
independent variable observations and the independent variable mean.
This page has some useful definitions:
http://mtsu32.mtsu.edu:11308/dictionary/formula.htm
chi-square is the same as SSE: sum squared error.
Barrett Foat
On Tuesday 25 September 2007 11:52, Julian Winter wrote:
>* Hi,*
>
>* Can anyone tell me how to get the R-square value from the GSL linear*
>* regression functions, specifically, gsl_multifit_linear and*
>* gsl_fit_linear? They only seem to return the chi-square.*
>
>* Thanks,*
>
>* Julian Winter*
>* GDA Corp.*
>* 200 Innovation Blvd., Suite 234*
>* State College, PA 16803*
>* 814-237-4060 (tel)*
>* 814-689-3375 (fax)*
>* address@hidden*
>
>
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