Work with the latest equipment

Improve Your Life





=================================================================================================== At the Go/No-Go meeting a few minutes ago the Fedora 14 Alpha release was declared GOLD. Thank you to everyone who contributed to making it happen! All the details of the meeting can be found here: Minutes: http://meetbot.fedoraproject.org/fedora-meeting/2010-08-19/fedora-meeting.2010-08-19-00.00.html Minutes (text): http://meetbot.fedoraproject.org/fedora-meeting/2010-08-19/fedora-meeting.2010-08-19-00.00.txt Log: http://meetbot.fedoraproject.org/fedora-meeting/2010-08-19/fedora-meeting.2010-08-19-00.00.log.html _______________________________________________ test-announce mailing list test ... @lists.fedoraproject.org https://admin.fedoraproject.org/mailman/listinfo/test-announce -- test mailing list te ... @lists.fedoraproject.org To unsubscribe: https://admin.fedoraproject.org/mailman/listinfo/test Le mercredi 03 février 2010 à 09:23 -0600, Peng Yu a écrit : On Wed, Feb 3, 2010 at 2:12 AM, Emmanuel Charpentier < char ... @bacbuc.dyndns.org > wrote: Le mercredi 03 février 2010 à 00:01 -0500, David Winsemius a écrit : On Feb 2, 2010, at 11:38 PM, Peng Yu wrote: ? contrast in the contrast package gives me the following description. However, I have no idea what Type II and III contrasts are. Could somebody explain it to me? And what does 'type' mean here? *Â'typeÂ'*: set Â'type="average"Â' to average the individual contrasts (e.g., to obtain a Type II or III contrast ) In no particular order: http://courses.washington.edu/b570/handouts/type3ss.pdf http://core.ecu.edu/psyc/wuenschk/SAS/SS1234.doc http://n4.nabble.com/a-kinder-view-of-Type-III-SS-td847282.html Don't expect any follow-up questions to be answered or further citations offered. This is really more in the realm of statistics education than an R specific question. Nonwhistanding David Winsemius' closing remark, I'd like to add something that should be requested reading (and maybe hinted at in lm()'s help page) : http://www.stats.ox.ac.uk/pub/MASS3/Exegeses.pdf (BTW, despite is age, MASS *is* requested reading, and Bill Venables' exegeses should be part of it). Do you by any means indicate that MASS describes Type I, II, III, IV contrast ? Although MASS describes contrasts , but I don't think it describes Type I, II, III, IV contrast . it does not. But it explains (tersely) *WHY* one has *serious* logical difficulties when tryng to interpret contrasts not abiding to marginality principle. HTH, Emmanuel Charpentier ______________________________________________ R-h ... @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.