car v1.1-2


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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. Where relevant, the functions in car are consistent with na.action = na.omit or na.exclude.

Functions in car

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