As the websites posted below gave me some problems One couldn't be found and the other froze in the middle), would someone please explain what has happeded to the non-central t distribution since I last checked. If the assumptions for t are met, that is, the observations are NID with equal variances, why would the non-central t be asymmetric.
Paul R. Swank, Ph.D. Professor, Developmental Pediatrics Medical School UT Health Science Center at Houston -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of David Wnsemius Sent: Tuesday, November 19, 2002 11:31 PM To: [EMAIL PROTECTED] Subject: Re: Two questions (I generally bottom post in newsgroups. See below. DW) [EMAIL PROTECTED] (Paul R Swank) wrote in 003601c28fd5$af678bc0$520e6a81@PEDUCT225:">news:003601c28fd5$af678bc0$520e6a81@PEDUCT225: > The non-central t is symmetric. > > Paul R. Swank, Ph.D. > Professor, Developmental Pediatrics > Medical School > UT Health Science Center at Houston > > I suggest you re-examine your belief: http://www.itl.nist.gov/div898/software/dataplot.html/distribu.htm and http://www.itl.nist.gov/div898/software/dataplot.html/refman2/auxillar/nctp df.pdf David Winsemius, MD, MPH . . ================================================================= Instructions for joining and leaving this list, remarks about the problem of INAPPROPRIATE MESSAGES, and archives are available at: . http://jse.stat.ncsu.edu/ . ================================================================= . . ================================================================= Instructions for joining and leaving this list, remarks about the problem of INAPPROPRIATE MESSAGES, and archives are available at: . http://jse.stat.ncsu.edu/ . =================================================================
