hawkins {dprep} | R Documentation

## The Hawkins-Bradu-Kass dataset

### Description

An artificial dataset generated by Hawkins, Bradu, and Kass for illustrating some of the merits of robust techniques.

### Usage

    data(hawkins)

### Format

A data frame consisting of 75 observations on the following 4 variables.

V1
  first predictor variable
V2
  second predictor variable
V3
  third predictor variable
V4
  the response variable

### Source

The data appears on p. 94 of Rousseeuw, P, and Leroy, A. (1987). Robust Regression and outlier detection. John Wiley & Sons. New York.

### References

Hawkins, D.M, Bradu, D., Kass, G.V.(1984). Location of several outliers in multiple regression data using elemental sets. Technometrics, 26. 197-208.

### Examples

    #---- Finding Outlier using the LOF algorithm----
    data(hawkins)
    haw.lof=maxlof(hawkins[,1:3],"Hawkins")
    haw.lof[order(haw.lof,decreasing=TRUE)]

[Package dprep version 1.0 Index]