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car (version 1.0-11)

Companion to Applied Regression

Description

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.

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Version

Install

install.packages('car')

Monthly Downloads

419,564

Version

1.0-11

License

GPL version 2 or newer

Maintainer

John Fox

Last Published

February 3rd, 2026

Functions in car (1.0-11)

hccm

Heteroscedasticity-Corrected Covariance Matrices
box.cox.var

Constructed Variable for Box-Cox Transformation
ceres.plots

Ceres Plots
car-internal

Internal car functions
Anova

Anova Tables for Linear and Generalized Linear Models
Ellipses

Ellipses, Data Ellipses, and Confidence Ellipses
outlier.test

Bonferroni Outlier Test
box.cox

Box-Cox Family of Transformations
logit

Logit Transformation
leverage.plots

Regression Leverage Plots
box.cox.powers

Multivariate Unconditional Box-Cox Transformations
panel.car

Panel Function Coplots
vif

Variance Inflation Factors
linear.hypothesis

Test Linear Hypothesis
n.bins

Number of Bins for Histogram
Transformation Axes

Axes for Transformed Variables
reg.line

Plot Regression Line
box.tidwell

Box-Tidwell Transformations
Cook's Distances

Cook's Distances for Linear and Generalized Linear Models
scatterplot.matrix

Scatterplot Matrices
subsets

Plot Output from regsubsets Function in leaps package
recode

Recode a Variable
spread.level.plot

Spread-Level Plots
scatterplot

Scatterplots with Boxplots
durbin.watson

Durbin-Watson Test for Autocorrelated Errors
ncv.test

Score Test for Non-Constant Error Variance
Var

Variance-Covariance Matrices (deprecated)
Contrasts

Functions to Construct Contrasts
which.names

Position of Row Names
Ask

Change Argument to a Function Interactively
av.plots

Added-Variable Plots
cr.plots

Component+Residual (Partial Residual) Plots
qq.plot

Quantile-Comparison Plots
Anscombe

U. S. State Public-School Expenditures
UN

GDP and Infant Mortality
Mandel

Contrived Collinear Data
States

Education and Related Statistics for the U.S. States
Angell

Moral Integration of American Cities
Florida

Florida County Voting
Sahlins

Agricultural Production in Mazulu Village
Prestige

Prestige of Canadian Occupations
Cowles

Cowles and Davis's Data on Volunteering
Burt

Fraudulent Data on IQs of Twins Raised Apart
Greene

Refugee Appeals
Ornstein

Interlocking Directorates Among Major Canadian Firms
Ginzberg

Data on Depression
Mroz

U.S. Women's Labor-Force Participation
Guyer

Anonymity and Cooperation
Duncan

Duncan's Occupational Prestige Data
Friendly

Format Effects on Recall
Hartnagel

Canadian Crime-Rates Time Series
Baumann

Methods of Teaching Reading Comprehension
Adler

Experimenter Expectations
Bfox

Canadian Women's Labour-Force Participation
Leinhardt

Data on Infant-Mortality
Migration

Canadian Interprovincial Migration Data
Vocab

Vocabulary and Education
Chile

Voting Intentions in the 1988 Chilean Plebiscite
Blackmoor

Exercise Histories of Eating-Disordered and Control Subjects
Can.pop

Canadian Population Data
Davis

Self-Reports of Height and Weight
DavisThin

Davis's Data on Drive for Thinness
Quartet

Four Regression Datasets
Moore

Status, Authoritarianism, and Conformity
Freedman

Crowding and Crime in U. S. Metropolitan Areas
Chirot

The 1907 Romanian Peasant Rebellion
Ericksen

The 1980 U.S. Census Undercount
Robey

Fertility and Contraception
US.pop

Population of the United States
SLID

Survey of Labour and Income Dynamics
Womenlf

Canadian Women's Labour-Force Participation