Can I use "lme" to deal with grouping data when I only get one data point per group?
Ruixiao Lu <tinypenguin <at> gmail.com> writes:
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:
((Slightly modified by DM)) fac=as.factor(c(1:6)) y=c(-0.3465181, -0.2019839, -0.7610653, -0.1992943, -0.1663348, 0.2811794) data.y=data.frame(y,fac) y.g=groupedData(y~1|fac) intervals(y.g) ## and you will see .... Similar example on page 27 of Pinheiro/Bates Dieter Menne