C.test

0th

Percentile

Cochran's C test of homogeneity of variances

Performs a Cochran's test of the null hypothesis that the largest variance in several sampled variances are the same.

Keywords
htest
Usage
C.test(object)
Arguments
object
An object of class lm, containing the specified design.
Details

The test statistic is a ratio that relates the largest variance to the sum of the sampled variances.

Value

A list of class htest containing the following components:
statistic
Cochran's C test statistic
p-value
The p-value of the test
alternative
A character string describing the alternative hypothesis
method
The character string Cochran test of homogeneity of variances
data.name
A character string giving the name of the lm object
estimate
Sample estimates of variances

See Also

gad

Aliases
  • C.test
Examples
  library(GAD)
  data(rohlf95)
  cg <- as.fixed(rohlf95$cages)
  mq <- as.random(rohlf95$mosquito) 
  model <- lm(wing ~ cg + mq%in%cg, data = rohlf95)
  C.test(model)
Documentation reproduced from package GAD, version 1.1.1, License: GPL (>= 2.0)

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