Description Usage Format Details Source References
This data set contains the data for the salamander mating experiment in McCullagh and Nelder.
1 |
A list containing four components:
y | response matrix |
x | fixed effect model matrix |
z | random effect model matrix |
i | random effect index vector |
The data involve two salamander populations, called rough butt (R)
and whiteside (W), and each Bernoulli response is the success or
failure of a mating between two salamanders. The four possible
mating types are denoted R/R, R/W, W/R, and W/W (female/male).
The parameterization used is as follows. The four fixed effect parameters
are level parameters for these mating types (column labels for x
give the order). The random effect parameters are the scale parameters
for female and male, in that order. Column labels for z
indicate
the animal associated with the random effect, "fR1"
meaning female
named R1, and so forth.
McCullagh and Nelder (1989), pages 439-450.
McCullagh, P. & Nelder, J. A. (1989). Generalized Linear Models, second edition. London: Chapman & Hall.
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