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
kjetil brinchmann halvorsen
2003-Jan-21 23:08 UTC
[R] Modified F-test for heterogeneous error variances
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 > > ______________________________________________ > R-help at stat.math.ethz.ch mailing list > http://www.stat.math.ethz.ch/mailman/listinfo/r-help