robustbase: education – R documentation

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education

Education Expenditure Data

Description

Education Expenditure Data, from Chatterjee and Price (1977, p.108). This data set, representing the education expenditure variables in the 50 US states, providing an interesting example of heteroscedacity.

Usage

data(education, package="robustbase")

Format

A data frame with 50 observations on the following 6 variables.

State: State
Region: Region (1=Northeastern, 2=North central, 3=Southern, 4=Western)
X1: Number of residents per thousand residing in urban areas in 1970
X2: Per capita personal income in 1973
X3: Number of residents per thousand under 18 years of age in 1974
Y: Per capita expenditure on public education in a state, projected for 1975

Source

P. J. Rousseeuw and A. M. Leroy (1987) Robust Regression and Outlier Detection; Wiley, p.110, table 16.

Examples

data(education)
education.x <- data.matrix(education[, 3:5])


summary(lm.education <- lm(Y ~ Region + X1+X2+X3, data=education))


## See  example(lmrob.M.S) # for how robust regression is used

robustbase

Basic Robust Statistics

v0.93-7

GPL (>= 2)

Authors

Martin Maechler [aut, cre] (<https://orcid.org/0000-0002-8685-9910>), Peter Rousseeuw [ctb] (Qn and Sn), Christophe Croux [ctb] (Qn and Sn), Valentin Todorov [aut] (most robust Cov), Andreas Ruckstuhl [aut] (nlrob, anova, glmrob), Matias Salibian-Barrera [aut] (lmrob orig.), Tobias Verbeke [ctb, fnd] (mc, adjbox), Manuel Koller [aut] (mc, lmrob, psi-func.), Eduardo L. T. Conceicao [aut] (MM-, tau-, CM-, and MTL- nlrob), Maria Anna di Palma [ctb] (initial version of Comedian)

Initial release

2021-01-04