|  
 Brief
                    bio.  | Supplementary materials for
                    some of my books:  John Fox, A Mathematical Primer
                        for Social Statistics, Second Edition
                    (Sage, 2021). 
  John Fox,  Regression Diagnostics:
                        An Introduction, Second Edition (Sage,
                    2020). 
  John Fox and Sanford Weisberg,
                    An R Companion to Applied
                        Regression, Third Edition (Sage, 2019):
                    on-line appendices, data files, R scripts, errata,
                    updates, and more. 
  John Fox, Using the R Commander: A
                        Point-and-Click Interface for R (Chapman
                    and Hall/CRC, 2017): data files, errata and updates, 
  John Fox, Applied Regression
                        Analysis and Generalized Linear Models, Third
                        Edition  (Sage, 2016): appendices;
                    datasets; data-analysis exercises; errata;  answers to odd-numbered
                    exercises in the text; and bonus Chapters
                    25 on  Bayesian
                    estimation of regression models, and 26 on  causal analysis of
                    observational data (including directed acyclic
                    causal graphs, "DAGs"). 
 
 Selected R packages:
 
  The car
                  ("companion to applied regression") and effects
                  packages are associated with Fox and Weisberg, An R Companion to Applied
                      Regression, Third Edition (see in books above). 
  The cv
                    package (written with Georges Monette) for
                  cross-validation of regression models. 
  The ivreg
                    package (written with Achim Zeileis and
                  
                  Christian Kleiber) for instrumental-variables
                  (including two-stage least-squares) regression. 
  The matlib
                    package (written with Michael Friendly and Phil
                  Chalmers) for understanding matrices, linear algebra,
                  and related topics. 
  The polycor
                    package for computing polychoric and polyserial
                  correlations. 
  The Rcmdr
                    package (written with Manuel Munoz Marquez and
                  Milan Bouchet-Valat), which provides a graphical user
                  interface (GUI) for R. 
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