car v1.0-10


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by John Fox

Companion to Applied Regression

This package accompanies J. Fox, An R and S-PLUS Companion to Applied Regression, Sage, 2002. The package contains mostly functions for applied regression, linear models, and generalized linear models, with an emphasis on regression diagnostics, particularly graphical diagnostic methods. There are also some utility functions. With some exceptions, I have tried not to duplicate capabilities in the basic distribution of R, nor in widely used packages. Some of the functions in car will use functions in the MASS package, if it is present; the subsets function graphs objects produced by the regsubsets function in the leaps package. Where relevant, the functions in car are consistent with na.action = na.omit or na.exclude.

Functions in car

Name Description
Ask Change Argument to a Function Interactively
box.cox.powers Multivariate Unconditional Box-Cox Transformations
Transformation Axes Axes for Transformed Variables
subsets Plot Output from regsubsets Function in leaps package
Contrasts Functions to Construct Contrasts
box.cox.var Constructed Variable for Box-Cox Transformation
Cook's Distances Cook's Distances for Linear and Generalized Linear Models
Var Variance-Covariance Matrices (deprecated)
Ellipses Ellipses, Data Ellipses, and Confidence Ellipses
Anova Anova Tables for Linear and Generalized Linear Models
vif Variance Inflation Factors
hccm Heteroscedasticity-Corrected Covariance Matrices
leverage.plots Regression Leverage Plots
ncv.test Score Test for Non-Constant Error Variance
box.cox Box-Cox Family of Transformations
car-internal Internal car functions
ceres.plots Ceres Plots
durbin.watson Durbin-Watson Test for Autocorrelated Errors
av.plots Added-Variable Plots
scatterplot.matrix Scatterplot Matrices
linear.hypothesis Test Linear Hypothesis
outlier.test Bonferroni Outlier Test
cr.plots Component+Residual (Partial Residual) Plots
n.bins Number of Bins for Histogram
recode Recode a Variable
scatterplot Scatterplots with Boxplots
which.names Position of Row Names
logit Logit Transformation
qq.plot Quantile-Comparison Plots
spread.level.plot Spread-Level Plots
box.tidwell Box-Tidwell Transformations
reg.line Plot Regression Line Panel Function Coplots
Hartnagel Canadian Crime-Rates Time Series
Adler Experimenter Expectations
Blackmoor Exercise Histories of Eating-Disordered and Control Subjects
Burt Fraudulent Data on IQs of Twins Raised Apart
Migration Canadian Interprovincial Migration Data
Vocab Vocabulary and Education
Davis Self-Reports of Height and Weight
Florida Florida County Voting
Can.pop Canadian Population Data
Guyer Anonymity and Cooperation
Friendly Format Effects on Recall
Angell Moral Integration of American Cities
Mroz U.S. Women's Labor-Force Participation
Freedman Crowding and Crime in U. S. Metropolitan Areas
Ginzberg Data on Depression
Chile Voting Intentions in the 1988 Chilean Plebiscite
Anscombe U. S. State Public-School Expenditures
Leinhardt Data on Infant-Mortality
States Education and Related Statistics for the U.S. States
US.pop Population of the United States
Greene Refugee Appeals
Prestige Prestige of Canadian Occupations
Womenlf Canadian Women's Labour-Force Participation
Baumann Methods of Teaching Reading Comprehension
SLID Survey of Labour and Income Dynamics
Quartet Four Regression Datasets
Ornstein Interlocking Directorates Among Major Canadian Firms
UN GDP and Infant Mortality
Cowles Cowles and Davis's Data on Volunteering
Ericksen The 1980 U.S. Census Undercount
Robey Fertility and Contraception
DavisThin Davis's Data on Drive for Thinness
Mandel Contrived Collinear Data
Moore Status, Authoritarianism, and Conformity
Duncan Duncan's Occupational Prestige Data
Sahlins Agricultural Production in Mazulu Village
Bfox Canadian Women's Labour-Force Participation
Chirot The 1907 Romanian Peasant Rebellion
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