[R] Bartlett Test

[Richardson, Patrick]

?bartlett.test

>From the help page "If x is a list, its elements are taken as the samples or fitted linear models to be compared for homogeneity of variances. In this case, the elements must either all be numeric data vectors or fitted linear model objects, g is ignored, and one can simply use bartlett.test(x) to perform the test. If the samples are not yet contained in a list, use bartlett.test(list(x, ...)). 

Otherwise, x must be a numeric data vector, and g must be a vector or factor object of the same length as x giving the group for the corresponding elements of x. "

Patrick

-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On Behalf Of Amit Patel
Sent: Monday, March 01, 2010 9:26 AM
To: r-help at r-project.org
Subject: [R] Bartlett Test

Hi 

I am trying to conduct a Bartlett test between two groups Samp 1 and Samp 2, both of which are vectors of equal length. I cant find any information on how to do this. Does the data need to be in a structured list. 

Thanks in advance





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