On 10/30/2009 9:20 PM, Stropharia wrote: > Dear R users, > > Does anyone know of a package that implements the Johnson-Neyman procedure - > for testing differences among groups when the regression slopes are > heterogeneous (in an ANCOVA model)? I did not get any matches for functions > when searching using R Site Search. > > If it has not been implemented in R, does anyone know of another statistical > package that has this procedure? I found very old scripts available for > Mathematica, but have had difficulty getting them to work.
http://www.comm.ohio-state.edu/ahayes/SPSS%20programs/modprobe.htm > Thanks in advance. > > best, > > Steve -- Chuck Cleland, Ph.D. NDRI, Inc. (www.ndri.org) 71 West 23rd Street, 8th floor New York, NY 10010 tel: (212) 845-4495 (Tu, Th) tel: (732) 512-0171 (M, W, F) fax: (917) 438-0894 ______________________________________________ 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.
