t-distribution =scaled mixture of normal distributions

From: Yaning Wang Date: July 24, 2003 technical Source: cognigencorp.com
From: "WANG,YANING" <yaning@ufl.edu> Subject: [NMusers] t-distribution =scaled mixture of normal distributions Date: Thu, 24 Jul 2003 10:52:28 -0400 (EDT) Dear Dr. Piotrovsky: Thanks for your response. It seems that NONMEM has to turn to the original way of dealing with t-distribution--scaled mixture of normal distributions (to be exact, scaled by a gamma distribution). Maybe it is easier to explain the results in terms of a heterogeneous population with different normal distributions rather than a general t-distribution with a degree of freedom. Is this the reason why NONMEM doesn't have t-distribution which is quite common in most of other softwares? Thanks Yaning Wang Department of Pharmaceutics College of Pharmacy University of Florida

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Jul 23, 2003 Yaning Wang t-distribution in NONMEM?
Jul 24, 2003 Vladimir Piotrovskij RE: t-distribution in NONMEM?
Jul 24, 2003 Yaning Wang t-distribution =scaled mixture of normal distributions
Jul 25, 2003 Vladimir Piotrovskij RE: t-distribution =scaled mixture of normal distributions
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