Hi lmer Club:

I've got a model like lmer( y ~ x , 1|cluster).

I'm permuting the cluster values 1000 times to obtain the nonparametric
distribution of sigma under the null hypothesis that sigma = 0.

I'm getting alot of negative values!!

Am I doing something wrong, or what is going on there??

Please reply directly to Phil.Smith.Duluth.GA@gmail.com  .... I'm not too
good at understanding listserves.

Thanks!
Phil Smith
CDC

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