David Firth

BradleyTerry2

Specify and fit the Bradley-Terry model, including structured versions in which the parameters are r...


Functions and Datasets to Accompany J. Fox and S. Weisberg,
An R Companion to Applied Regression, S...


Graphical and tabular effect displays, e.g., of interactions, for
various statistical models with l...

Computation of the matrix exponential, logarithm, and related quantities.

Functions to specify and fit generalized nonlinear models, including models with multiplicative inte...

Functions and datasets to support Venables and Ripley,
"Modern Applied Statistics with S" (4th editi...

Functions to compute quasi variances and associated measures of approximation error.

Functions to facilitate inference on the relative importance of predictors in a linear or generalize...

Provides additional data sets, methods and documentation to complement the 'vcd' package for Visuali...