TukeyHSD.lm: Additional interfaces to TukeyHSD

In ProjectMOSAIC/mosaic: Project MOSAIC Statistics and Mathematics Teaching Utilities

Additional interfaces to TukeyHSD

Description

TukeyHSD() requires use of aov(). Since this is a hindrance for beginners, wrappers have been provided to remove this need.

Usage

## S3 method for class 'lm'
TukeyHSD(x, which, ordered = FALSE, conf.level = 0.95, ...)

## S3 method for class 'formula'
TukeyHSD(
  x,
  which,
  ordered = FALSE,
  conf.level = 0.95,
  data = parent.frame(),
  ...
)

Arguments

x	an object, for example of class lm or formula
which, ordered, conf.level, ...	just as in TukeyHSD() from the base package
data	a data frame. NB: This does not come second in the argument list.

Examples

## These should all give the same results
if (require(mosaicData)) {
  model <- lm(age ~ substance, data=HELPrct)
  TukeyHSD(model)
  TukeyHSD( age ~ substance, data=HELPrct)
  TukeyHSD(aov(age ~ substance, data=HELPrct))
}

ProjectMOSAIC/mosaic documentation built on Feb. 21, 2024, 2:11 a.m.