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- Path: sparky!uunet!paladin.american.edu!auvm!REUSEL.LEIDENUNIV.NL!ROTTGERI
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- Message-ID: <9207181027.AA17937@reusel.LeidenUniv.nl>
- Newsgroups: bit.listserv.sas-l
- Date: Sat, 18 Jul 1992 12:29:08 -0500
- Reply-To: Huub Rottgering <rottgeri@REUSEL.LEIDENUNIV.NL>
- Sender: "SAS(r) Discussion" <SAS-L@UGA.BITNET>
- From: Huub Rottgering <rottgeri@REUSEL.LEIDENUNIV.NL>
- Subject: question
- Comments: To: sas-l@awiimc12.imc.univie.ac.at
- Lines: 34
-
- Dear Sas Community,
-
-
- Does any one have a simple straight forward solution for
- using SAS for the following problem:
-
- I have a data set with N observation X_i and Y_i
- and variances for Y: sigma_y_i. I would like to fit
- a least square model to this data set that takes into
- account the known variances sigma_y_i.
-
- As far as i understand from the explanation that goes with
- proc reg, it is not possible to do this in this procedure. Note
- that using option weight or freq won't do the
- job. Using this the correct solution might be obtained
- but the estimated errors are not calculated taking into
- account sigma_y_i.
-
- A solution would be using proc mixed, but unfortunately
- we have sas 6.07 on a unix sparc machine, where
- proc mixed is not yet implemented.
-
- regards,
-
-
- Huub
-
-
- --
- Huub Rottgering
- Institute: Sterrewacht Leiden, Leiden University
- mail: P.O. Box 9513, 2300 RA Leiden, The Netherlands
- Telefone: 31-71275838 Telex: 39058 astro nl Telefax: 31-71275819
- email: rottgeri@strw.leidenuniv.nl
-