That's the funny thing. I would assume that, too. But although the overall F-test was significant, there was no statistically significant difference using the HSD test, between the largest and smallest mean. I have to imagine this is somewhat rare but it just doesn't seem as if it should be a mathematical possibility. I think it could be due to the type of error-rate that a test is designed to control.
Rick Dr. Rick Froman, Chair Division of Humanities and Social Sciences Box 3055 x7295 [EMAIL PROTECTED] http://www.jbu.edu/academics/hss/faculty/rfroman.asp Proverbs 14:15 "A simple man believes anything, but a prudent man gives thought to his steps." -----Original Message----- From: Stuart McKelvie [mailto:[EMAIL PROTECTED] Sent: Tuesday, April 03, 2007 4:23 PM To: Teaching in the Psychological Sciences (TIPS) Subject: [tips] RE: ANOVA interpretation Dear Rick and others, I would say this for sure: the biggest and smallest means must logically be different! I do not understand the claims about the Scheffé test - it is extremely conservative. Stuart ______________________________________________ Stuart J. McKelvie, Ph.D., Department of Psychology, Bishop's University, 2600 College Street, Sherbrooke, Québec J1M 0C8, Canada. E-mail: [EMAIL PROTECTED] or [EMAIL PROTECTED] Phone: (819)822-9600, Extension 2402 Fax: (819)822-9661 Bishop's Psychology Department Web Page: http/:www.ubishops.ca/ccc/dev/soc/psy __________________________________ > -----Original Message----- > From: Rick Froman [mailto:[EMAIL PROTECTED] > Sent: Tuesday, April 03, 2007 2:50 PM > To: Teaching in the Psychological Sciences (TIPS) > Subject: [tips] ANOVA interpretation > > How would you interpret an ANOVA result where the F-test was > significant but none of the multiple comparisons were > significant in an HSD comparison? > > Rick > > > Dr. Rick Froman, Chair > Division of Humanities and Social Sciences Professor of > Psychology John Brown University 2000 W. University Siloam > Springs, AR 72761 [EMAIL PROTECTED] > (479) 524-7295 > http://www.jbu.edu/academics/hss/faculty/rfroman.asp > > > > "Pete, it's a fool that looks for logic in the chambers of the human > heart." > - Ulysses Everett McGill > > > > > --- > To make changes to your subscription go to: > http://acsun.frostburg.edu/cgi-bin/lyris.pl?enter=tips&text_mo > de=0&lang=english > > --- To make changes to your subscription go to: http://acsun.frostburg.edu/cgi-bin/lyris.pl?enter=tips&text_mode=0&lang=english --- To make changes to your subscription go to: http://acsun.frostburg.edu/cgi-bin/lyris.pl?enter=tips&text_mode=0&lang=english
