#install packages MASS (goes with Venables and Ripley) and DAAG (Maindonald book) using installer

#lab session based on pages 20-23 of Maindonald

library(MASS)

data(Animals)
attach(Animals)

body 
brain

#simple plot in R for continuous variables
plot(body, brain) #plot of observed weights of animals and their brains
plot(sqrt(body), sqrt(brain)) #sqrt transformed plot


#Simple table in R for count variables 
library(DAAG)
library(lattice)

data(possum)
table(possum$Pop, possum$sex)

#simple two way plot of possum data
xyplot(totlngth ~ age | sex*Pop, data=possum)