aircraft {rrcov}R Documentation

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)

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

For convenience, the data sets aircraft.x, a matrix with the four (independent) variables of the data frame, and aircraft.y, the numeric vector giving the fifth (dependent) variable, are provided as well.

Source

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

Examples

data(aircraft)
covMcd(aircraft.x)

summary(lm.aircraft <- lm(aircraft.y ~ aircraft.x))


[Package rrcov version 0.2-5 Index]