Although not as good as putting it in the help pages there is an R wiki that anyone can add to:
http://wiki.r-project.org On Sun, Dec 14, 2008 at 5:04 PM, John Sorkin <jsor...@grecc.umaryland.edu> wrote: > Ben, > You were quite correct to indicate that Tanmoy should not use the listserver > to get answers to his class assignments. Never the less, I do have some > sympathy for him. The help pages for the R functions summary, anova, drop1, > do not discuss the critically important issue addressed by Tanmoy's class > assignment. I believe this is a serious limitation. If users do not > understand the differences between the output of these three basic functions, > they can easily be led astray. I am not sure who has access to the help > pages, but I hope they see this Email and consider modifying the help pages > so as to address the important issue highlighted by Tanmoy's class assignment. > John > > John David Sorkin M.D., Ph.D. > Chief, Biostatistics and Informatics > University of Maryland School of Medicine Division of Gerontology > Baltimore VA Medical Center > 10 North Greene Street > GRECC (BT/18/GR) > Baltimore, MD 21201-1524 > (Phone) 410-605-7119 > (Fax) 410-605-7913 (Please call phone number above prior to faxing) > >>>> Ben Bolker <bol...@ufl.edu> 12/14/2008 12:25 PM >>> > > > > Tanmoy Talukdar wrote: >> >> I think now I have got some understanding of the things. >> >> y ~ x1+x2 first adds x1 to the model and then adds x2 . >> But y~x2+x1 adds x2 first, so the value we get are different. >> >> please correct me if i am wrong. >> >> > > You are not wrong. However, you're wearing out your welcome > a bit by posting very frequent messages to the list. I'd strongly > recommend that you find some more help locally, or find a > copy of Peter Dalgaard's "Introductory Statistics with R", > and try to work through some of these problems on your own > a bit more. If you can demonstrate that you've really gone > away and read and thought about these things, and articulate > what still doesn't make sense to you about the way R is doing > things, and that we are not simply answering homework questions, > you will probably get useful answers ... > > good luck, > Ben Bolker > > > -- > View this message in context: > http://www.nabble.com/Some-clarificatins-of-anova%28%29-and-summary-%28%29-tp21000954p21002390.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > 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. > > Confidentiality Statement: > This email message, including any attachments, is for th...{{dropped:6}} > > ______________________________________________ > 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. > ______________________________________________ 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.
