1) HTML formatted email does not come through reliably. Please read the Posting Guide.
2) It is very nearly always necessary to provide a reproducible example when asking for help on this list to avoid complete failure to communicate. 3) Given the above limitations (meaning I may not be understanding you correctly), this looks like a problem with your understanding of statistics, not a problem with R. If so, you should be asking this question in a forum focused less on the tool and more on the theory, such as stats.stackexchange.com. -- Sent from my phone. Please excuse my brevity. On July 7, 2016 5:43:58 PM PDT, lhart...@yorku.ca wrote: > > > Hello, > > I am analyzing some data that has violated assumptions of ANOVA and am >using the WRS2 package in R. I am comparing three groups, Dx, >(schizophrenia, schizoaffective and control) on various variables, one >of >which is premorbid IQ (preIQ). > > preIQdataSDx #trimmed means > tapply(preIQdataSPreIQ, preIQdataSDx, >mean, >tr=.2, na.rm=TRUE) Schizophrenia Schizoaffective Control 89.29412 >95.83333 >95.54545 > > > The post hoc test shows that the schizophrenia and controls group >differ >significantly which makes sense when you look at their trimmed means; >however, what does not make sense is that the control and >schizoaffective >disorder groups differ significantly from each other (their means are >almost identical). Additionally, if the schizophrenia and control group >differ significantly, shouldn't the schizophrenia group also differ >significantly from the control group too, as the control group and >schizoaffective disorder groups have very similar means. I am wondering >if >the lincon post hoc test is flawed in some way or if I am not setting >something up correctly in R. Any help is greatly appreciated. Thank >you. > > Best, > > Leah Hartman > > [[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. ______________________________________________ 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.