From: Dieter Menne <dieter.menne_at_menne-biomed.de>

Date: Tue, 11 Dec 2007 07:43:47 +0000 (UTC)

R-help_at_r-project.org mailing list

https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. Received on Tue 11 Dec 2007 - 08:03:45 GMT

Date: Tue, 11 Dec 2007 07:43:47 +0000 (UTC)

Bin Yue <leffgh <at> 163.com> writes:

> After reading the following two links:

*> http://luna.cas.usf.edu/~mbrannic/files/regression/Logistic.html
**> http://www.tufts.edu/~gdallal/logistic.htm
**> I've known the mathematical basis for logistic regression.However I am
**> still not so sure about the "logit "
**> For a categorical independent variable, It is easy to understand the
**> procedures how "log odds" are calculated. As I know, First the observations
**> are grouped according to the IV and DV, generating a contingency table.
*

..

> My problem is this : in my data set , the IVs are continuous variables,

*> do I still have to generate such a table and compute the log odds for each
**> level of IV according to which the log odds are calculated?
*

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