mean(iris$Sepal.Width) ## [1] 3.057333
sd(iris$Sepal.Width) ## [1] 0.4358663
range(iris$Sepal.Width) ## [1] 2.0 4.4
##Plot outlining Petal width vs. Petal Length:
iris$petal.Area = pi * iris$Petal.Length * iris$Petal.Width
plot(iris$Petal.Length, iris$Petal.Width, pch=16, col=as.factor(iris$Species))
hist(iris$Petal.Width)