aircraft {robustbase}

Aircraft Data

Description

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.

Usage

data(aircraft, package="robustbase")

Format

A data frame with 23 observations on the following 5 variables.

X1

Aspect Ratio

X2

Lift-to-Drag Ratio

X3

Weight

X4

Thrust

Y

Cost

Source

P. J. Rousseeuw and A. M. Leroy (1987) Robust Regression and Outlier Detection; Wiley, page 154, table 22.

Examples

data(aircraft)
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)
c_air