# 
# Written by:
# -- 
# John L. Weatherwax                2009-04-21
# 
# email: wax@alum.mit.edu
# 
# Please send comments and especially bug reports to the
# above email address.
# 
#-----

library(alr3)
data(UN1)
attach(UN1)

# 1.3.2:
plot(PPgdp,Fertility)

# 1.3.3 linear regression appears much more reasonble in this case: 
plot( log(PPgdp,base=2), log(Fertility,base=2) )