ethanol {SemiPar}

Ethanol data

Description

The ethanol data frame contains 88 sets of measurements for variables from an experiment in which ethanol was burned in a single cylinder automobile test engine.

Usage

data(ethanol)

Format

This data frame contains the following columns:

NOx

the concentration of nitric oxide (NO) and nitrogen dioxide (NO2) in engine exhaust, normalized by the work done by the engine.

C

the compression ratio of the engine

E

the equivalence ratio at which the engine was run – a measure of the richness of the air/ethanol mix.

Source

Brinkman, N.D. (1981). Ethanol fuel – a single-cylinder engine study of efficiency and exhaust emissions. SAE transactions Vol. 90, No 810345, 1410–1424.

References

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

Examples

library(SemiPar)
data(ethanol)
pairs(ethanol)