factorial: Data From a Chemical Experiment
In BayesDA: Functions and Datasets for the book "Bayesian Data Analysis"

Description Usage Format Details Examples

A factorial designed experiment from chemistry. Three experimental variables representing reactor conditions, and the response, conversion (%) from n-Heptane to acetylene.

1	data(factorial)

A data frame with 16 observations on the following 4 variables.

temperature: reactor temperature
ratio: ratio of H2 to n-heptane (mole ratio)
contact: Contact time (sec)
conversion: the response, conversion from n-heptane to acetylene

This data is used in an exercise on regression with many explanatory variables, page 413 of second edition. Original authors assume a quadratic functional form.

data(factorial)
summary(factorial)
# non-Bayesian analysis:
fac.mod1 <- lm(conversion ~ temperature+ratio+contact+
                            I(temperature*ratio)+I(temperature*contact)+
                            I(ratio*contact)+I(temperature^2)+I(ratio^2)+I(contact^2), 
                  data=factorial)
summary(fac.mod1)