Those statistics are useful when the distribution of the variance components are symmetric. If you want this info you can refer to mcmcsamp 


-----Original Message-----
From: r-sig-mixed-models-bounces@r-project.org on behalf of huang min
Sent: Tue 12/9/2008 12:20 AM
To: r-sig-mixed-models@r-project.org
Subject: [R-sig-ME] variance of the variance components
 
Hi,

I wonder why R does not supply the variance for the variance components. I
have checked both the nlme and lme4 packages.

Does SAS supply this kind information? Thanks.

Huang

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