Name:

Description:

A small counterexample data set devised by Andrew Siegel. Six (out of nine) data points lie on the line y = 0 such that some robust regression estimators exhibit the “exact fit” property.

Variables:

A data frame with 9 observations on the following 3 variables.

x

a numeric vector

y

a numeric vector

Link To Google Sheets:

Rows:

Columns:

Files:

License Type:

References/Notes/Attributions:

Source

Emerson and Hoaglin (1983, p.139)

References

Peter J. Rousseeuw and Annick M. Leroy (1987) Robust Regression and Outlier Detection Wiley, p.60–61

R Dataset Upload:

Use the following R code to directly access this dataset in R.

R Coding Interface: