On May 22, 7:26 pm, François <[email protected]> wrote:
> If I am not mistaken about the meaning of the distribution_function method
> gsl may have actually corrected a bug and +oo is actually the value you are
> supposed to get, see this
> graph:http://en.wikipedia.org/wiki/File:Chi-square_distributionPDF.svg
> Would statisticians on the list care to comment?
That sounds correct to me. GSL's "nu" is Wikipedia's "k", according
to the GSL documentation. The pdf has an x^{k/2-1} in it, and nothing
to counteract this term growing large for x close to zero when k=1, so
a value of +oo looks right.
Rob
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