stephen sefick <ssefick <at> gmail.com> writes: > > I have a data set of mean velocity, discharge, and mean depth. I need > to find out which model best fits them out of log linear, linear, some > other kind of model... Using excel I have found that linear is not > that bad and log10(discharge) vs. the other two variables (I am trying > to predict velocity and depth from discharge) is not that bad either. > How do I test and see which one of these models is better... better > R-squared... I know this is a stats question and not particularly an > R question, but I will use R for the models vetting process. > any ideas would be greatly appreciated,
AIC is not bad, but see http://www.unc.edu/courses/2006spring/ecol/145/001/docs/lectures/lecture18.htm for computing AIC to compare models where some have transformed response variables ... Ben Bolker ______________________________________________ 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.
