exAM {robustbase} | R Documentation

## Example Data of Antille and May - for Simple Regression

### Description

This is an artificial data set, cleverly construced and used by Antille and May to demonstrate ‘problems’ with LMS and LTS.

### Usage

    data(exAM)

### Format

A data frame with 12 observations on 2 variables, `x` and `y`.

### Details

Because the points are not in general position, both LMS and LTS typically fail; however, e.g., `rlm(*, method="MM")` “works”.

### Source

Antille, G. and El May, H. (1992) The use of slices in the LMS and the method of density slices: Foundation and comparison.
In Yadolah Dodge and Joe Whittaker, editors, COMPSTAT: Proc. 10th Symp. Computat. Statist., Neuchatel, 1, 441–445; Physica-Verlag.

### Examples

    data(exAM)
    plot(exAM)
    summary(ls <- lm(y ~ x, data=exAM))
    abline(ls)

[Package robustbase version 0.92-8 Index]