# 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

gad

• 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)