rocket: Rocket Propellant

In ACSWR: A Companion Package for the Book "A Course in Statistics with R"

Description

Five different formulations of a rocket propellant x1 may be used in an aircrew escape systems on the observed burning rate Y. Here, each of the formulation is prepared by mixing from a batch of raw materials x2 which can support only five formulations required for the purpose of testing.

Usage

data(rocket)

Format

A data frame with 25 observations on the following 4 variables.

y

burning rate

batch

raw materials batch

op

experience of the operator

treat

formulation type of the propellant A B C D E

References

Montgomery, D. C. (1976-2012). Design and Analysis of Experiments, 8e. J.Wiley.

Examples

data(rocket)
matrix(rocket$treat,nrow=5)
par(mfrow=c(1,3))
plot(y~factor(op)+factor(batch)+treat,rocket)
rocket_aov <- aov(y~factor(op)+factor(batch)+treat,rocket)

Example output

     [,1] [,2] [,3] [,4] [,5]
[1,] "A"  "B"  "C"  "D"  "E" 
[2,] "B"  "C"  "D"  "E"  "A" 
[3,] "C"  "D"  "E"  "A"  "B" 
[4,] "D"  "E"  "A"  "B"  "C" 
[5,] "E"  "A"  "B"  "C"  "D" 

ACSWR documentation built on May 2, 2019, 6:53 a.m.