SemiPar (version 1.0-4.2)

janka: Janka hardness data

Description

The janka data frame has 36 observations on Australian timber samples.

Usage

data(janka)

Format

This data frame contains the following columns:

dens

a measure of density of the timber.

hardness

the Janka hardness (structural property) of the timber.

References

Ruppert, D., Wand, M.P. and Carroll, R.J. (2003) Semiparametric Regression Cambridge University Press. http://stat.tamu.edu/~carroll/semiregbook/

Examples

# NOT RUN {
library(SemiPar)
data(janka)
attach(janka)
plot(dens,hardness)
# }