janka {} | R Documentation |
The janka
data frame has 36 observations on Australian timber
samples.
data(janka)
This data frame contains the following columns:
Williams, E.J. (1959) Regression Analysis, New York: John Wiley & Sons.
Ruppert, D., Wand, M.P. and Carroll, R.J. (2003)
Semiparametric Regression Cambridge University Press.
http://stat.tamu.edu/~carroll/semiregbook/
library(SemiPar) data(janka) attach(janka) plot(dens,hardness)