coking {ISwR}

Coking data

Description

The coking data frame has 18 rows and 3 columns. It contains the time to coking in an experiment where the oven width and temperature were varied.

Usage

coking

Format

This data frame contains the following columns:

width

a factor with levels 4, 8, and 12, giving the oven width in inches.

temp

a factor with levels 1600 and 1900, giving the temperature in Fahrenheit.

time

a numeric vector, time to coking.

Source

R.A. Johnson (1994), Miller and Freund's Probability and Statistics for Engineers, 5th ed., Prentice-Hall.

Examples

attach(coking)
matplot(tapply(time,list(width,temp),mean))
detach(coking)