ex11.10 {Devore5}R Documentation

data from exercise 11.10

Description

Strength of concrete according to batch and test method

Usage

data(ex11.10)

Format

A data frame with 30 observations on the following 3 variables.

strength
a numeric vector of compressive strength (MPa)
Method
a factor with levels A B C
Batch
a factor with levels 1 2 3 4 5 6 7 8 9 10

Source

Devore, J. L. (2003) Probability and Statistics for Engineering and the Sciences (6th ed), Duxbury

Examples

data(ex11.10)
xtabs(strength ~ Batch + Method, data = ex11.10)

[Package Devore5 version 0.4-5 Index]