Hi i need help with this data set http://books.google.com.au/books?id=vWu-MJM_obsC&pg=PA62&dq=M345+statistical+methods+unit+13#PPA62,M1 what grouping methods could i use? -- View this message in context: http://www.nabble.com/Grouping-methods-tp23715866p23715866.html Sent from the R help mailing list archive at Nabble.com.