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| From | Nick Cox <njcoxstata@gmail.com> |
| To | statalist@hsphsun2.harvard.edu |
| Subject | Re: st: Is there a Stata package to compute the cumulative distribution of a Weibull distribution? |
| Date | Thu, 26 May 2011 00:36:43 +0100 |
Weibull is an obvious key word here and -findit weibull- points to various resources, including -weibullfit- from SSC. Did you try that? But the cdf of y that is a two-parameter Weibull is one line of Stata gen F = 1 - exp(-((y/b)^c)) -- where b is a scale parameter and c is a shape parameter -- so it is not clear to me why you seek a package for it. Your parameterisation may differ, but the formula is still simple. -weibullfit- fits, and -qweibull- and -pweibull- offer standard diagnostic plots for univariate fitting. Nick On Wed, May 25, 2011 at 10:49 PM, Tiago V. Pereira <tiago.pereira@mbe.bio.br> wrote: > Is there a Stata package to compute the cumulative distribution of a > two-parameter Weibull distribution that I am not aware of? * * 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/