The number of telephone calls (in tens of millions) made in Belgium from 1950-1973.

1 |

A data frame with 24 observations on the following 2 variables.

`year`

years since 1950 AD

`calls`

number of telephone calls in tens of millions

Rousseeuw, P.J. and Leroy, A.M. (1987), *Robust Regression and Outlier Detection*, New York: Wiley.

Hettmansperger, T.P. and McKean J.W. (2011), *Robust Nonparametric Statistical Methods, 2nd ed.*, New York: Chapman-Hall.

1 2 3 |

Questions? Problems? Suggestions? Tweet to @rdrrHQ or email at ian@mutexlabs.com.

All documentation is copyright its authors; we didn't write any of that.