On 25 Mar 2004 05:07:47 -0800, [EMAIL PROTECTED] (Anupama Ramachandran) wrote:
> <FONT face="Default Sans Serif, Verdana, Arial, Helvetica, sans-serif" > size=2><div>Hi</div> <DIV>I have a utility model in which time is treated as a dummy variable with values 0 and 1. In the utility model, time will interact with at least two other terms. If I specify time to be a dummy variable are interactions allowed with dummy variables? What are the specifics I should follow while doing this? Are their any papers which dela with the treatment of time as a dummy variable?</DIV><DIV>I'd really appreciate any help or suggestions in the same.</DIV><DIV> </DIV><DIV>Thanks</DIV><DIV>Anupama</DIV><DIV>Anupama Ramachandran</DIV><DIV>Ph.D Student</DIV><DIV>Dept. of marketing</DIV><DIV>R.H. Smith School of Business</DIV><DIV>University of Maryland, College Park</DIV></FONT> === end of post. - Please turn off the HTML options when posting. Did you create this dummy variable yourself? For a computer program, this 0/1 variable is apt to be a zero/one variable like any other, so you can have interactions, etc., in the same ways. On the other hand, some computer programs will create something that they call a "dummy variable" and will use it in specific ways that they define - and presumably their documentation tells you about it; we could not guess. -- Rich Ulrich, [EMAIL PROTECTED] http://www.pitt.edu/~wpilib/index.html - I need a new job, after March 31. Openings? - . . ================================================================= Instructions for joining and leaving this list, remarks about the problem of INAPPROPRIATE MESSAGES, and archives are available at: . http://jse.stat.ncsu.edu/ . =================================================================
