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- From: nichols@spss.com (David Nichols)
- Newsgroups: bit.listserv.stat-l
- Subject: Re: Finding critical F
- Message-ID: <Bz9oBC.yn@spss.com>
- Date: 14 Dec 92 20:45:10 GMT
- References: <STAT-L%92121316120756@VM1.MCGILL.CA>
- Sender: news@spss.com (Net News Admin)
- Organization: SPSS Inc.
- Lines: 31
-
- In article <STAT-L%92121316120756@VM1.MCGILL.CA> dick darlington <dick_darlington@QMRELAY.MAIL.CORNELL.EDU> writes:
- > 12:42 PM
- > OFFICE MEMO Time:
- > Subject:
- > Finding critical F 12-08-92
- > Date:
- >
- >In response to Brian Day's question, one can use Systat's FIF (F inverse
- >function) operator to find critical values of F for any specified values of
- >alpha, df1 and df2. Day specified df1 = 278 and df2 = 500, but did not specify
- >alpha. Thus I entered into Systat's editor a column headed ALPHA containing
- >the four values .05, .025, .01, .005. Then I issued the command
- >>let f = fif(1-alpha, 278, 500)
- >Systat returned the following four values of F: 1.187, 1.227, 1.275, 1.308.
- >Dick Darlington, Psychology, Cornell
-
- SPSS has an FCDF function in its MATRIX procedure, which is available on
- mainframe and Unix platforms 4.0 and after, as well as Windows and (I think)
- other micro platforms other than PC+.
-
- matrix
- compute x=1-fcdf(value,df1,df2)
- print x
-
- is the syntax.
-
- --
- David Nichols Senior Statistical Support Specialist SPSS, Inc.
- Phone: (312) 329-3684 Internet: nichols@spss.com Fax: (312) 329-3657
- *******************************************************************************
- Any correlation between my views and those of SPSS is strictly due to chance.
-