[R] log-linear analysis - calculate treatment effects
Becker Cordula
cb486 at cam.ac.uk
Tue Jan 17 21:02:11 CET 2006
Dear all,
I have run a hierarchical log-linear analysis using loglin {stats}
and came up with a specific model. loglin returns me the parameter
estimates giving me an idea in which direction the observed
frequencies deviate from the expected ones for my different factors.
To assess the significance of any such effects I would need to
calculate the ratio of the log-linear parameter estimate to its
standard error (as explained in Howell: Statistical Methods for
Psychology, 4th Edition, p. 637ff). Unfortunately, I have no idea and
couldn't find out what this standard error refers to and how to
calculate it or the ratio using R (well, the ratio is no problem if I
have the standard error).
I would very much appreciate any help!
Thanks and best wishes, Cordula Becker
----------------------------------------------------
Dr. Cordula Becker
Department of Experimental Psychology
University of Cambridge
Downing Site
Cambridge CB2 3EB
United Kingdom
Tel.: +44 (0)1223 339715
Email: cb486 at cam.ac.uk
http://vision.psychol.cam.ac.uk/cbecker/
More information about the R-help
mailing list