search for: varietyb

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2004 Apr 08
0
lme, mixed models, and nuisance parameters
I have the following dataset: 96 plots 12 varieties 2 time points The experiment is arranged as follows: A single plot has two varieties tested on it. With respect to time points, plots come in 3 kinds: (1) varietyA, timepoint#1 vs. variety B, timepoint#1 (2) varietyA timepoint #2 vs. varietyB timepoint #2 (3) varietyA timepoint #1 vs. variety A timepoint#2 - there are 36 of each kind of within timepoint comparison and 24 between timepoint comparisons. so it isn't a fully connected design. Plots and varieties are random samples from a population of plots and varieties, so the...
2004 Mar 18
1
two lme questions
...variety B on plot #1 has treatment T2 applied to it. across the whole experiment variety A is exposed to treatment T1 the same number of times as treatment T2. with respect to time points, plots come in 3 kinds. (1) varietyA, timepoint#1 vs. variety B, timepoint#1 (2) varietyA timepoint #2 vs. varietyB timepoint #2, and (3) varietyA timepoint #1 vs. variety A timepoint#2 plots and varieties are random samples from a population of plots and varieties, so they are random effects. The technical treatment and timepoints are fixed effects. i am particularly interested in the variance components...