|Date: ||Mon, 26 May 2003 06:19:02 -0600|
|Reply-To: ||WCS-Belize <email@example.com>|
|Sender: ||"SPSSX(r) Discussion" <SPSSX-L@LISTSERV.UGA.EDU>|
|From: ||WCS-Belize <firstname.lastname@example.org>|
|Subject: ||SPSS 10.x Win DFA interpretation still need HELP!!!!|
|Content-Type: ||text/plain; charset="iso-8859-1"; format=flowed|
Running SPSS 10.x Windows. Running DFA and have a question on the
probabilities given in the Case Wise Statistics table. Being way out in
the jungle we have limited resources (no discussion with colleagues) so all
of you out there are the support network :-)
The SPPS results Coach provides an explanation that is 180° from what was
given in a few examples provided on WWW sites using DFA. This is confusing
So can someone like Arthur J. Kendall help with the explanation of
interpretation of the various probabilities displayed in SPSS when you run DFA?
The first display is P(D>d| G=g) over p and df, the followed by P(G=g|D=d)
and then the second group P(G=g|D=d) is given.
What is not clear, at least for a dumb field biologist :-) is which of the
probabilities are used to determine which is the predicted group
membership. What is important is to determine when unclassified cases are
classified incorrectly into a class they do not belong to. This is for
cases when they actually do not belong to a predefined or classified case
Thanks again for all the previous replies that were close but did not
answer the key question.
Cheers from the Jungles of Belize.