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- Comments: Gated by NETNEWS@AUVM.AMERICAN.EDU
- Path: sparky!uunet!europa.asd.contel.com!paladin.american.edu!auvm!UGA.BITNET!FDANE
- Message-ID: <STAT-L%92110814283527@VM1.MCGILL.CA>
- Newsgroups: bit.listserv.stat-l
- Date: Sun, 8 Nov 1992 14:16:12 EST
- Sender: "STATISTICAL CONSULTING" <STAT-L@MCGILL1.BITNET>
- From: Frank Dane <FDANE@UGA.BITNET>
- Subject: Re: Chi-square
- In-Reply-To: Message of Fri, 6 Nov 1992 23:19:41 EST from <WLTPIRIE@VTVM1>
- Lines: 29
-
- I sent a version of my comment on the Chi-Square probability question
- privately, but the direction of the public thread leads me to post
- my point to the list.
-
- The original question dealt with how to determine which of various
- Chi-Square results were "more significant" when the probability
- levels associated with the statistics were all in the form .0000
- The Chi-Square values were all present, but the probabilities were
- indistinguishable.
-
- I can't recall the original wording of the request, but my impression
- was that the various Chi-Square values, each of which had different
- degrees of freedom, were associated with various models tested on
- the same data set. If that impression is correct, then differences
- among the Chi-Square values can be tested simply by subtracting the
- Chi Square values and evaluating the resulting difference on the
- degrees of freedom that result from substracting the larger
- degrees of freedom from the smaller degrees of freedom..
-
- Of course, if the different Chi Square values do not reflect
- different models attempted on the same data, then none of the
- above applies.
-
- Dr. Francis C. Dane, Associate Professor and Chair
- Department of Psychology, Mercer University
- Macon, GA 31207-0001 USA
- Bitnet: FDANE@UGA Internet: FDANE@UGA.CC.UGA.EDU
- Tel: (912) 752-2972
- Fax: (912) 752-2108
-