xmp12.08 {Devore5}R Documentation

data from Example 12.8

Description

The xmp12.08 data frame has 14 rows and 2 columns.

Format

This data frame contains the following columns:

strength
fracture strength, as a percentage of the ultimate tensile strength.
attenuat
attenuation or decrease in the amplitude of the stress wave (neper/cm).

Details

Data from a study to investigate how the propagation of an ultrasonic stress wave through a substance depends on the properties of the substance. The test substance was fiberglass-reinforced polyester composites.

Source

Devore, J. L. (2000) Probability and Statistics for Engineering and the Sciences (5th ed), Duxbury

(1985), ``Promising quantitative nondestructive evaluation techniques for composite materials'', Materials Evaluation, 561-565.

Examples

data(xmp12.08)
plot(attenuat ~ strength, data = xmp12.08,
     xlab = "Fracture strength (% of ultimate tensile strength)",
     ylab = "Attenuation (neper/cm)",
     main = "Data from Example 12.8, page 504")
fm1 <- lm(attenuat ~ strength, data = xmp12.08)
abline(fm1)
summary(fm1)
opar <- par(mfrow = c(2, 2))
plot(fm1)
par(opar)
anova(fm1)