Plastic: Plastic Film Data
In heplots: Visualizing Hypothesis Tests in Multivariate Linear Models
Plastic R Documentation
Plastic Film Data
Description
An experiment was conducted to determine the optimal conditions for
extruding plastic film. Three responses were measured in relation to two
factors, change in rate of extrusion and amount of an additive, both with two levels and n=5 observations per cell.
Format
A data frame with 20 observations on the following 5 variables.
teara numeric vector: tear resistance
glossa numeric vector: film gloss
opacitya numeric vector: film opacity
ratea factor representing change in the rate of extrusion with levels Low (-10%), High (10%)
additivea factor with levels Low (1.0%), High (1.5%)
Source
Johnson, R.A. & Wichern, D.W. (1992). Applied Multivariate
Statistical Analysis, 3rd ed., Prentice-Hall. Example 6.12 (p. 266).
References
Krzanowski, W. J. (1988). Principles of Multivariate
Analysis. A User's Perspective. Oxford. (p. 381)
Examples
str(Plastic)
plastic.mod <- lm(cbind(tear, gloss, opacity) ~ rate*additive, data=Plastic)
car::Anova(plastic.mod)
pairs(plastic.mod)
heplots documentation built on Aug. 23, 2026, 5:07 p.m.
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| Plastic | R Documentation |
Plastic Film Data
Description
An experiment was conducted to determine the optimal conditions for
extruding plastic film. Three responses were measured in relation to two
factors, change in rate of extrusion and amount of an additive, both with two levels and n=5 observations per cell.
Format
A data frame with 20 observations on the following 5 variables.
teara numeric vector: tear resistance
glossa numeric vector: film gloss
opacitya numeric vector: film opacity
ratea factor representing change in the rate of extrusion with levels
Low(-10%),High(10%)additivea factor with levels
Low(1.0%),High(1.5%)
Source
Johnson, R.A. & Wichern, D.W. (1992). Applied Multivariate Statistical Analysis, 3rd ed., Prentice-Hall. Example 6.12 (p. 266).
References
Krzanowski, W. J. (1988). Principles of Multivariate Analysis. A User's Perspective. Oxford. (p. 381)
Examples
str(Plastic)
plastic.mod <- lm(cbind(tear, gloss, opacity) ~ rate*additive, data=Plastic)
car::Anova(plastic.mod)
pairs(plastic.mod)
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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