[R] Modified F-test for heterogeneous error variances

Tue Jan 21 23:08:09 CET 2003

On 21 Jan 2003 at 8:34, Corey Moffet wrote:

oneway.test in package ctest (loaded by default).

Kjetil Halvorsen

> Dear R-help:
> 
> Does anyone know of a package in R that will do Welch's modified F-test
> for heterogeneous error variances?  Are there other statistical techniques
> available in R that test the equality of means when homoscedastisity
> is violated?  't.test' does this in the pairwise sense when var.equal =
> TRUE.
> With best wishes and kind regards I am
> 
> Sincerely,
> 
> Corey A. Moffet
> Support Scientist
> 
> University of Idaho
> Northwest Watershed Research Center
> 800 Park Blvd, Plaza IV, Suite 105
> Boise, ID 83712-7716
> (208) 422-0718
> 
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