car v0.8-3


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by John Fox

Companion to Applied Regression

This package contains mostly functions for applied regession, 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 plot.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
plot.subsets Plot Output from regsubsets Function in leaps package
reg.line Plot Regression Line
box.cox.powers Multivariate Unconditional Box-Cox Transformations Panel Function Coplots
Ellipses Ellipses, Data Ellipses, and Confidence Ellipses
leverage.plots Regression Leverage Plots
which.names Position of Row Names
ncv.test Score Test for Non-Constant Error Variance
outlier.test Bonferroni Outlier Test
Deletion Diagnostics Deletion Diagnostics for Linear and Generalized Linear Models
linear.hypothesis Test Linear Hypothesis
car-internal Internal car functions
Anova Anova Tables for Linear and Generalized Linear Models
durbin.watson Durbin-Watson Test for Autocorrelated Errors
box.cox.var Constructed Variable for Box-Cox Transformation
box.tidwell Box-Tidwell Transformations
spread.level.plot Spread-Level Plots
vif Variance Inflation Factors
Transformation Axes Axes for Transformed Variables
Var Variance-Covariance Matrices
scatterplot.matrix Scatterplot Matrices
recode Recode a Variable
ceres.plots Ceres Plots
cr.plots Component+Residual (Partial Residual) Plots
av.plots Added-Variable Plots
n.bins Number of Bins for Histogram
Ask Change Argument to a Function Interactively
hccm Heteroscedasticity-Corrected Covariance Matrices
box.cox Box-Cox Family of Transformations
scatterplot Scatterplots with Boxplots
logit Logit Transformation
qq.plot Quantile-Comparison Plots
Ginzberg Data on Depression
Duncan Duncan's Occupational Prestige Data
Guyer Anonymity and Cooperation
Adler Experimenter Expectations
Friendly Format Effects on Recall
Davis Self-Reports of Height and Weight
Mroz U.S. Women's Labor-Force Participation
Moore Status, Authoritarianism, and Conformity
Can.pop Canadian Population Data
UN GDP and Infant Mortality
Freedman Crowding and Crime in U. S. Metropolitan Areas
Migration Canadian Interprovincial Migration Data
Vocab Vocabulary and Education
Mandel Contrived Collinear Data
Burt Fraudulent Data on IQs of Twins Raised Apart
Ericksen The 1980 U.S. Census Undercount
Anscombe U. S. State Public-School Expenditures
States Education and Related Statistics for the U.S. States
SLID Survey of Labour and Income Dynamics
Angell Moral Integration of American Cities
Bfox Canadian Women's Labour-Force Participation
Prestige Prestige of Canadian Occupations
Baumann Methods of Teaching Reading Comprehension
Leinhardt Data on Infant-Mortality
Greene Refugee Appeals
Hartnagel Canadian Crime-Rates Time Series
Ornstein Interlocking Directorates Among Major Canadian Firms
Robey Fertility and Contraception
Florida Florida County Voting
Sahlins Agricultural Production in Mazulu Village
Quartet Four Regression Datasets
Womenlf Canadian Women's Labour-Force Participation
US.pop Population of the United States
Chile Voting Intentions in the 1988 Chilean Plebiscite
Chirot The 1907 Romanian Peasant Rebellion
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Date 2001/8/2
License GPL version 2 or newer
URL, http:/

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