Maybe Friedman test On Mon, Sep 6, 2010 at 4:47 PM, David Winsemius <dwinsem...@comcast.net>wrote:
> The usual least-squares methods are fairly robust to departures from > normality. Furthermore, it is the residuals that are assumed to be normally > distributed (not the marginal distributions that you are probably looking > at) , so it does not sound as though you have yet examined the data > properly. Tell us what the descriptive stats (say the means, variance, 10th > and 90th percentiles) are on the residuals within cells cross-classified by > the gender and city-of-birth variables (say the means, variance, 10th and > 90th percentiles). > > > On Sep 6, 2010, at 4:34 PM, Iasonas Lamprianou wrote: > > >> Dear friends, two questions >> >> (1) does anyone know if there are any non-parametric equivalents of the >> two-way ANOVA in R? I have an ordinal non-normally distributed dependent >> variable and two factors (gender and city of birth). Normally, one would try >> a two-way anova, but if R has any non-parametric equivalents, that might be >> great. >> > > There is an entire task view page on robust methods if you decide to press > on with this quest. > > > (2) Also, if the interaction of gender and city of birth is statistically >> significant, which post-hoc tests should I run? >> > > How many cities are we talking about? > > > Thanks >> >> Jason >> >> >> Dr. Iasonas Lamprianou >> > > -- > > David Winsemius, MD > West Hartford, CT > > > ______________________________________________ > R-help@r-project.org mailing list > 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 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.
