Hi Sérgio.
It might be worth pointing out that we do not expect that the residuals
from a phylogenetic regression to be normal. I described this with
respect to the phylogenetic ANOVA on my blog
(http://blog.phytools.org/2013/02/a-comment-on-distribution-of-residuals.html),
but this applies equally to phylogenetic regression.
All the best, Liam
Liam J. Revell, Assistant Professor of Biology
University of Massachusetts Boston
web: http://faculty.umb.edu/liam.revell/
email: [email protected]
blog: http://blog.phytools.org
On 6/17/2015 12:40 PM, Sergio Ferreira Cardoso wrote:
Hello all,
I'm having a problem with a Multiple Regression PGLS analysis that I'm
performing. The residuals are not normal and it's difficult to bring them
to normality. In these cases, are there any alternatives to the linear
model? I know that for non-phylogenetic analyses other models exist, but is
there any alternative method for phylogenetic analysis?
Thanks in advance.
Best regards,
Sérgio.
_______________________________________________
R-sig-phylo mailing list - [email protected]
https://stat.ethz.ch/mailman/listinfo/r-sig-phylo
Searchable archive at http://www.mail-archive.com/[email protected]/
