car v1.0-13


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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
spread.level.plot Spread-Level Plots
n.bins Number of Bins for Histogram
Contrasts Functions to Construct Contrasts
reg.line Plot Regression Line
cr.plots Component+Residual (Partial Residual) Plots
ncv.test Score Test for Non-Constant Error Variance
av.plots Added-Variable Plots
influence.plot Regression Influence Plot
which.names Position of Row Names
qq.plot Quantile-Comparison Plots
car-internal Internal car functions
levene.test Levene's Test
linear.hypothesis Test Linear Hypothesis
Transformation Axes Axes for Transformed Variables
box.cox.powers Multivariate Unconditional Box-Cox Transformations
Anova Anova Tables for Linear and Generalized Linear Models
vif Variance Inflation Factors
scatterplot.matrix Scatterplot Matrices
durbin.watson Durbin-Watson Test for Autocorrelated Errors
box.tidwell Box-Tidwell Transformations
box.cox.var Constructed Variable for Box-Cox Transformation
Ellipses Ellipses, Data Ellipses, and Confidence Ellipses
logit Logit Transformation
ceres.plots Ceres Plots
recode Recode a Variable Panel Function Coplots
subsets Plot Output from regsubsets Function in leaps package
scatterplot Scatterplots with Boxplots
box.cox Box-Cox Family of Transformations
leverage.plots Regression Leverage Plots
Cook's Distances Cook's Distances for Linear and Generalized Linear Models
Ask Change Argument to a Function Interactively
hccm Heteroscedasticity-Corrected Covariance Matrices
outlier.test Bonferroni Outlier Test
Var Variance-Covariance Matrices (deprecated)
Angell Moral Integration of American Cities
Chirot The 1907 Romanian Peasant Rebellion
Robey Fertility and Contraception
Chile Voting Intentions in the 1988 Chilean Plebiscite
Blackmoor Exercise Histories of Eating-Disordered and Control Subjects
Guyer Anonymity and Cooperation
Moore Status, Authoritarianism, and Conformity
Mandel Contrived Collinear Data
Duncan Duncan's Occupational Prestige Data
Can.pop Canadian Population Data
Quartet Four Regression Datasets
Adler Experimenter Expectations
Friendly Format Effects on Recall
Baumann Methods of Teaching Reading Comprehension
Greene Refugee Appeals
Migration Canadian Interprovincial Migration Data
Leinhardt Data on Infant-Mortality
Ornstein Interlocking Directorates Among Major Canadian Firms
Ginzberg Data on Depression
Mroz U.S. Women's Labor-Force Participation
Sahlins Agricultural Production in Mazulu Village
Cowles Cowles and Davis's Data on Volunteering
Davis Self-Reports of Height and Weight
SLID Survey of Labour and Income Dynamics
Freedman Crowding and Crime in U. S. Metropolitan Areas
Prestige Prestige of Canadian Occupations
Vocab Vocabulary and Education
UN GDP and Infant Mortality
Florida Florida County Voting
Hartnagel Canadian Crime-Rates Time Series
States Education and Related Statistics for the U.S. States
Womenlf Canadian Women's Labour-Force Participation
Ericksen The 1980 U.S. Census Undercount
Anscombe U. S. State Public-School Expenditures
Burt Fraudulent Data on IQs of Twins Raised Apart
US.pop Population of the United States
Bfox Canadian Women's Labour-Force Participation
DavisThin Davis's Data on Drive for Thinness
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Date 2004/7/13
License GPL version 2 or newer
Packaged Tue Jul 13 10:14:38 2004; John Fox

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