When predicting 0/1 data we can use logit (or probit or robit or some other robust model such as invlogit (0.01 + 0.98*X*beta)). Logit is simple enough and we can use bayesglm to regularize and avoid the problem of separation. What if there are more than 2 categories? If they’re ordered (1, 2, 3, etc),
Blog Archives
Post-hoc Pairwise Comparisons of Two-way ANOVA
I read this post today by John Quick. I was a little taken back when he used a pairwise t-test for post hoc analysis. In a contradiction the t-test did not show differences in the treatment means when the ANOVA model did. This is because the pairwise.t.test does not take into account the two-way anova,
New R Users Group for University of Utah and Research Park
I’m organizing a new R Users Group for the University of Utah and Research Park sponsored by the Study Design and Biostatistics Center. We welcome all to come. The first meeting will be dedicated to finding out what users needs and abilities are. We also welcome all skill levels. But I will also give a
NppToR 2.5.0
NppToR 2.5.0 supports R-2.12.0, improves saved settings and install, also retires the syntax generator.
NppToR 2.4.0 Adds Auto-Completion
I’ve had a wonderful summer, very busy, but now I’ve finally had some time to sit down and program some thing on NppToR that I’ve been wanting to get out. Thanks to Yihui Xie and his wonderful R script for generating auto-completion files, NppToR now has a dynamic Auto-Completion feature like the Dynamic Syntax generation
Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).
