Date: Sun, 13 Mar 2011 23:19:37 +0100
Reply-To: Garnik Kazarjan <email@example.com>
Sender: "SPSSX(r) Discussion" <SPSSX-L@LISTSERV.UGA.EDU>
From: Garnik Kazarjan <firstname.lastname@example.org>
Subject: Log transformations: dummy variables
I have to perform a regression analysis and when performing the analysis with the normal data I get a scatterplot which could indicate heteroscedasticity.
So I decided to transform the data by logging everything, however I have quite a gew dummy variables. My questions are:
1. Do I also log dummies (after adding 1)?
2. Do I have to log all the continous variables or can I only log the dependent variable?
3. How do I interpret the results?
Any help would be greatly appreciated.