aircraft {robustbase} | 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

### 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

[Package robustbase version 0.92-8 Index]