car v1.2-0


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