SemiPar (version 1.0-4.2)

fossil: Fossil data

Description

The fossil data frame has 106 observations on fossil shells.

Usage

data(fossil)

Format

This data frame contains the following columns:

age

age in millions of years

strontium.ratio

ratios of strontium isotopes

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(fossil)
attach(fossil)
plot(age,strontium.ratio)
# }