margolin: Margolin et al. (1981) present data from an Ames Salmonella assay, where y is the number of revertant colonies observed on a plate given a dose y of quinoline. The data were subsequently analysed by Breslow (1984), Lawless (1987) and Saha and Paul (2005).
data(margolin)Data frames each with the following variable.
ya numeric vector showing the number of revertant colonies observed on a plate given a dose x of quinoline.
xa numeric vector showing a a dose x of quinoline.
Data sets usefull for the GAMLSS booklet
Breslow, N. (1984) Extra-Poisson variation in log-linear models. Applied Statistics, 33, 38-44.
Hand et al. (1994) A handbook of small data sets. Chapman and Hall, London.
Lawless, J.F. (1987) Negative binomial and mixed Poisson regression. The Canadian Journal of Statistics, 15, 209-225.
Margolin, B.H., Kaplan, N. and Zeiger, E. (1981) Statistical analysis of the Ames salmonella/microsome test. Proceedings of the National Academy of Science, U.S.A., 76, 3779-3783.
Saha, K. and Paul, S. (2005) Bias-Corrected Maximum Likelihood Estimator of the Negative Binomial Dispersion Parameter. Biometrics, 61, 179-185
data(margolin)
with(margolin, plot(y~x))
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