Learning to use R is however not a trivial enterprise. If you know a bit about SAS or SPSS have a look at: http://www.burns-stat.com/pages/Tutor/slanguage.html under the links section. Robert Muenchen wrote some helpful documents comparing these programs. regards Bob ---------------------------------------------- CLASS-L list. Instructions: http://www.classification-society.org/csna/lists.html#class-l
