2.02.53.03.54.0 0.51.01.52.02.5 Sepal.Length + o setosa A versicolor +virginica c Sepal.Width Petal.Length 4 Petal.Width .0 4.5 5.5 6.5 7.5 1 2 3 5 6 7 Figure 2:Scatterplot matrix for the Anderson/Fisher iris data,showing within-species 50 and 95% concentration ellipses. 5● setosa versicolor virginica Sepal.Length 2.0 2.5 3.0 3.5 4.0 ● ● ●● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●● ●● ● ● ● ●● ● ● ● ●● ● ● ● ● ● ● ●● ● ● ● ● ●● ● ● ● ● ● ● ● ●● ● ● ● ● ● ● ● ● ● ● ● ● ●● ● ● ● ● ● ● ● ● ● ●● ● ● ● ● ● ● ● ●● ● ● 0.5 1.0 1.5 2.0 2.5 4.5 5.5 6.5 7.5 ● ● ● ● ● ● ● ● ● ● ●● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●● ● ●● ● ● ● ● ● ● ● ●● ● ● 2.0 2.5 3.0 3.5 4.0 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● Sepal.Width ● ● ● ● ● ● ●● ● ● ● ● ● ● ● ● ● ● ●● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●● ● ● ● ● ● ● ● ● ● ● ● ● ● ●●● ● ● ● ● ●●● ● ● ● ● ● ● ● ● ● ● ● ● ● ●● ●●● ●● ● ● ● ● ● ● ● ● ● ● ● ● ●● ● ● ● ●●● ●● ● ●●● ●●● ● ● ● ● ● ● ● ● ● ● ● ●● ●●●● ● ●●● ●● ● ● ●● ●●●● ● ● ● ●●● ● ● ● Petal.Length 1 2 3 4 5 6 7 ●● ● ● ● ●●● ●● ●●● ● ●● ● ● ● ● ●● ● ●● ● ●●●● ● ● ●● ●● ● ● 4.5 5.5 6.5 7.5 0.5 1.0 1.5 2.0 2.5 ●● ●●● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●● ● ● ● ●● ● ● ● ● ● ● ● ● ● ● ●●● ● ● ● ●●● ●● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●● ● ● ● ● ● ● ● ● ● ● ● ● ●● ●● ● ● 1 2 3 4 5 6 7 ●●● ● ● ● ● ● ● ● ●● ●●● ● ● ● ● ● ● ● ●● ● ● ●●● ● ● ● ● ● ●●● ● ● Petal.Width Figure 2: Scatterplot matrix for the Anderson/Fisher iris data, showing within-species 50 and 95% concentration ellipses. 5