topic Re: Difference between proc glm and proc mixed in SAS Procedures

Difference between proc glm and proc mixed

HimaAalamuri — Tue, 14 Oct 2014 05:53:36 GMT

hi good morning,

i want to know detailed back ground about proc glm and proc mixed! in which situation or case we use this concept and when we prefer this procedures.

With Regards,

Hima

Re: Difference between proc glm and proc mixed

SteveDenham — Tue, 14 Oct 2014 11:34:08 GMT

I refer you to the excellent book SAS for Mixed Models, Second Edition, by Littel et al. There are multiple examples comparing GLM and MIXED, with details throughout.

Steve Denham

Re: Difference between proc glm and proc mixed

Ksharp — Tue, 14 Oct 2014 12:10:30 GMT

Simple explanation is the coefficient of parameter is also a random variable .

E.X.

Here is General Linear Model : Y=a + b*X + E < - - E is a random variable

Here is Mixed Model : Y=a +(b+e)*X + E <-- both E and e are random variables .

As Steve point out to check some statistical books.

BTW, I am also a rookie of statistical theory.

Xia Keshan

Re: Difference between proc glm and proc mixed

HimaAalamuri — Wed, 07 Jan 2015 05:22:25 GMT

thank you

Re: Difference between proc glm and proc mixed

HimaAalamuri — Wed, 07 Jan 2015 05:23:40 GMT

thank you soo much both of you ...