Introduction
This web page redoes the analysis in the paperCharles J. Geyer, Stuart Wagenius, and Ruth G. Shaw (2007).
Aster Models for Life History Analysis.
Biometrika, 94, 415–426.
following the course slides, deck 1 and (for the last box) the end of deck 4.
Data
The data are in the dataset echinacea
in
the R package aster
. But we also want to see what the
data look like as a file. That file is the file
echinacea.txt
which we have copied from the source for the R package aster
to these web pages.
Set-Up and Model Fitting
Hypothesis Tests
Confidence Intervals
Distribution of Fitness Canonical Statistics
Conclusion: not that much difference between the two models.