https://communities.sas.com/t5/SAS-Procedures/proc-univariate-can-negative-binomial-be-used/m-p/31744#M7572 Hi glmer,<BR /> <BR /> No, PROC UNIVARIATE does not support negative binomial distribution directly. It does support gamma, and you can go from there since all distributions are interrelated:<BR /> <BR /> <A href="http://mathworld.wolfram.com/NegativeBinomialDistribution.html" target="_blank">http://mathworld.wolfram.com/NegativeBinomialDistribution.html</A> Thu, 14 May 2009 22:25:01 GMT statsplank 2009-05-14T22:25:01Z https://communities.sas.com/t5/SAS-Procedures/proc-univariate-can-negative-binomial-be-used/m-p/31743#M7571 hi,<BR /> i am trying to fit negative binomial , gamma and poisson distributions over a histogram to see which one is the best fit...however i am facing problems with the negative binomial distribution. does proc univariate support negative binomial or is there any other procedure i could use? Thu, 14 May 2009 07:20:11 GMT https://communities.sas.com/t5/SAS-Procedures/proc-univariate-can-negative-binomial-be-used/m-p/31743#M7571 glmer 2009-05-14T07:20:11Z https://communities.sas.com/t5/SAS-Procedures/proc-univariate-can-negative-binomial-be-used/m-p/31744#M7572 Hi glmer,<BR /> <BR /> No, PROC UNIVARIATE does not support negative binomial distribution directly. It does support gamma, and you can go from there since all distributions are interrelated:<BR /> <BR /> <A href="http://mathworld.wolfram.com/NegativeBinomialDistribution.html" target="_blank">http://mathworld.wolfram.com/NegativeBinomialDistribution.html</A> Thu, 14 May 2009 22:25:01 GMT https://communities.sas.com/t5/SAS-Procedures/proc-univariate-can-negative-binomial-be-used/m-p/31744#M7572 statsplank 2009-05-14T22:25:01Z