C.test
From GAD v1.1.1
by Leonardo SandriniNeto
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
 pvalue
 The pvalue 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
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)
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