From: breezezhaoeei on 23 Mar 2010 14:25 Hi SAS experts, I have a three level model like this: proc mixed data=test; class schoolid teacherid ; model post = istx prec / solution outp=r outpm=mr covb influence ddfm=bw ; random intercept / sub=teacherid(schoolid) solution G; random intercept / sub=schoolid solution G; run; I know outp r can give me student level residual and outpm can give me marginal residual (student+all the random level). But is there a ways to get teacher level residual and school level residual separately so that I can draw plot to check whether they meet the equal variance assumption of HLM model? Or is there any other way to check the equal variance assumption? Thank you very much, Qingfeng
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