This is the identical dataset as original iris data where numeric values of
Sepal.Length, Sepal.Width, Petal.Length, Petal.Width
measured in centimeters are given for 50 flowers from each of 3 species of iris.
data(iris)a data.frame containing
sepal length
sepal width
petal length
petal width
(factor) one of 'setosa','versicolor', and 'virginica'.