length=c(263,256,251,242,248,281,274,256,249,264,245,272,263,260,271,273,291,278,281) area=factor(c('1 Helmut','1 Helmut','1 Helmut','1 Helmut','1 Helmut','1 Helmut', '2 Big Bear','2 Big Bear','2 Big Bear','2 Big Bear', '3 Susanville','3 Susanville','3 Susanville','3 Susanville','3 Susanville', '4 Loop Hill','4 Loop Hill','4 Loop Hill','4 Loop Hill')) boxplot(length~area) library(lattice) dotplot(length~area)