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

[Barrett C. Foat]

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)
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