Displaying 2 results from an estimated 2 matches for "statman1".
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stratman1
2006 Mar 30
0
Robust measures of goodness of fit?
...e
suggest an appropriate measure of goodness-of-fit [1]? All I've found
after trawling the web, literature databases, and previous r-help posts,
is the "robust R^2" on pp. 362-363 of the S-plus manual, which is
available at
http://web.mit.edu/afs/athena/software/splus_v7.0/www/statman1.pdf
(7.57 MB)
It is based on M-estimators as detailed in Chapter 11 of statman1.pdf. I
think the s-plus method lmRobMM() returns this "robust R-squared", but I
would like to stay within R. Implementing the abovementioned formulas in R
was not straightforward because the definition...
2004 May 18
1
mixed models
Hi folks
Can anyone direct me to a guide to analysing mixed models in R that is
understandable by mere mortals (or worse, mere biologists)? I have read
MASS and also Mick Crawley's book on the subject, have thrashed my way
through the various help files from the NLME package and I'm afraid I
remain baffled :-(. Particularly confusing is exactly what groupedData
does, how I should use