The web appendix contains information about using S (R
and S-PLUS) to fit a variety of regression models not covered in the text.
These are generally brief presentations, and at a relatively advanced level
(comparable to starred sections in the text). A general reference for most
of these topics is Fox,
Applied Regression, Linear Models, and Related Methods,
Sage, 1997; other references are given in the various appendices.
Script files
are available for the examples in each appendix..

- Nonlinear Regression and Nonlinear Least Squares
- Nonparametric Regression
- Robust Regression
- Time-Series Regression and Generalized Least Squares
- Cox Proportional-Hazards Regression
for Survival Data

- Mixed-Effects Models
- Structural-Equation Models
- Bootstrapping Regression Models
- Frames, Environments, and Scope in R and
S-PLUS