factorial {BayesDA} | R Documentation |
Data From a Chemical Experiment
Description
A factorial designed experiment from chemistry. Three experimental variables representing reactor conditions, and the response, conversion (%) from n-Heptane to acetylene.
Usage
data(factorial)
Format
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
Details
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.
Examples
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)
[Package BayesDA version 2012.04-1 Index]