Aircraft Data, deals with 23 single-engine aircraft built
over the years 1947-1979, from Office of Naval Research.
The dependent variable is cost (in units of \$100,000)
and the explanatory variables are aspect ratio, lift-to-drag ratio,
weight of plane (in pounds) and maximal thrust.
A data frame with 23 observations on the following 5 variables.
P. J. Rousseeuw and A. M. Leroy (1987)
Robust Regression and Outlier Detection;
Wiley, page 154, table 22.
summary( lm.airc <- lm(Y ~ ., data = aircraft))
summary(rlm.airc <- MASS::rlm(Y ~ ., data = aircraft))aircraft.x <- data.matrix(aircraft[,1:4])
c_air <- covMcd(aircraft.x)
Dataset imported from https://www.r-project.org.