education {rrcov} | R Documentation |
Education Expenditure Data, from Chatterjee and Price (1977, p.108). This data set, representing the education expenditure variables in the 50 US states, provides an interesting example of heteroscedacity.
data(education)
A data frame with 50 observations on the following 6 variables.
State
Region
X1
X2
X3
Y
For convenience, the data sets education.x
, a matrix with the
three (explanatory) variables of the data frame, and education.y
,
the numeric vector giving the dependent variable, are provided as well.
P. J. Rousseeuw and A. M. Leroy (1987) Robust Regression and Outlier Detection. Wiley, p.110, table 16.
data(education) covMcd(education.x) summary(lm.education <- lm(Y~X1:X3, data=education)) summary(lts.education <- ltsReg(Y~X1:X3, data=education))