| ancova-class {HH} | R Documentation |
Class "ancova" Analysis of Covariance
Description
Analysis of Covariance. The class is an extension of "aov"
and "lm". It is identical to the "aov" for a single factor and a single
covariate plus an attribute which contains a "trellis" object.
Four different models are included in the class. See ancova
for the examples.
Objects from the Class
A virtual Class: No objects may be created from it.
Extends
Class "aov", directly.
Class "lm", by class "aov", distance 2.
Class "mlm", by class "aov", distance 2, with explicit test and coerce.
Class "oldClass", by class "aov", distance 3.
Class "oldClass", by class "aov", distance 4, with explicit test and coerce.
Methods
No methods defined with class "ancova" in the signature.
S3-type methods are
"anova.ancova", "coef.ancova",
"coefficients.ancova", "model.frame.ancova",
"plot.ancova", "predict.ancova",
"print.ancova", "summary.ancova".
"plot.ancova(x)" plots a standard lm plot of x.
"print.ancova(x)" prints the anova(x) and the trellis attribute.
The remaining methods use NextMethod.
Author(s)
Richard M. Heiberger <rmh@temple.edu>
References
Heiberger, Richard M. and Holland, Burt (2015). Statistical Analysis and Data Display: An Intermediate Course with Examples in R. Second Edition. Springer-Verlag, New York. https://link.springer.com/book/10.1007/978-1-4939-2122-5