[R] Modified F-test for heterogeneous error variances

Corey Moffet cmoffet at nwrc.ars.usda.gov
Tue Jan 21 16:35:03 CET 2003


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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