[R] Can I use "lme" to deal with grouping data when I only get one data point per group?

From: Ruixiao Lu <tinypenguin_at_gmail.com>
Date: Thu 15 Sep 2005 - 04:43:17 EST

Hi there,
I have a question for using "lme". Say, I have 6 data points and they belong to six groups (one group factor). So there is no replicates for each group and I cannot separate the with-in group variation from the between group variation.
But when I try to use "lme" to deal with it, it gave the answers for both with-in group variation and the between group variation! The statement is as below:






An example is:
y=c(-0.3465181, -0.2019839, -0.7610653, -0.1992943, -0.1663348, 0.2811794) then the lme gave me the variance components: 0.09865809 (intercept , between-group variance) 0.01387379 (residual, with-in group variance)  So, my question is, from theory we cannot get separate estimates of with-in group variation and the between group variation, then what dose the output of the "lme" mean?


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