A bivariate data set obtained from the Old Faithful Geyser, containing the eruption length and the length of the previous eruption for 271 eruptions of this geyser in minutes.
geyser2
Eruption length
The eruption length in minutes.
Previous eruption length
The length of the previous eruption in minutes.
Garc<ed>a-Escudero, L.A.; Gordaliza, A. (1999). "Robustness properties of k-means and trimmed k-means". Journal of the American Statistical Assoc., Vol.94, No.447, 956-969. H<e4>rdle, W. (1991). "Smoothing Techniques with Implementation in S.", New York: Springer.