car v1.2-2


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