\begin{Schunk}
\begin{Sinput}
 plot(EX  ~  MET, data=dat, xlab="Metropolitan Population (%)",ylab="Public Expenditures (Per Capita, 1960)")
 pemod2 <- lm(EX ~ MET, data=dat)
 abline(pemod2)
\end{Sinput}
\end{Schunk}
