You can use quantile regression (in quantreg package) to compare percentiles between two groups in a linear model formulation. If you are really interested in "equivalence" testing and not just using the term informally, you might check out Cade (2011. Estimating equivalence with quantile regression. Ecological Applications 21: 281-289) for some examples.
Brian Brian S. Cade, PhD U. S. Geological Survey Fort Collins Science Center 2150 Centre Ave., Bldg. C Fort Collins, CO 80526-8818 email: ca...@usgs.gov <brian_c...@usgs.gov> tel: 970 226-9326 On Thu, Sep 24, 2015 at 12:31 PM, Mohamed A.Abdel-Fattah Mansour via R-help <r-help@r-project.org> wrote: > Dear AllI Have the data for two samples drawn from two different > populations > | > > | > > | > > | > > | > > | Percentiles > > | > | > > | Mean > > | STD > > | Min > > | Max > > | 5th > > | 25th > > | 50th > > | 75th > > | 95th > > | > | Sample 1 > > | 25 > > | 2 > > | 16 > > | 30 > > | 18 > > | 20 > > | 26 > > | 27 > > | 29 > > | > | Sample 2 > > | 26 > > | 2.1 > > | 21 > > | 32 > > | 17 > > | 21 > > | 27 > > | 28 > > | 30 > > | > > > I need to test the equivalence of the two samples regarding percentiles. > Dr. Mohamed A.Abdel-Fattah Mansour Associate Prof. of Industrial > Engineering Industrial Engineering Department Faculty of Engineering KKU > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
