car v1.1-1


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