Re: Independent Variables

From: Herman Rubin (hrubin_at_odds.stat.purdue.edu)
Date: 03/08/05 

Date: 8 Mar 2005 15:20:48 -0500

In article <1110077796.334180.166230@o13g2000cwo.googlegroups.com>,
Tony <afrodriguez@att.net> wrote:
>Dear Stan,

>Thank you for your prompt reply.

>The suspected causes are ethnicity, culture at birth, and educational
>environment: three dimensions. Thus, three categorical variables?

>Or, one categorical variable, called Group Indicator, with three
>possible values?

>By the way, it's not a homework problem. I'm a doctoral student with
>no knowledge of statistics.

This problem calls for a better treatment than you are
considering. I do not know how much data you can get
on the various possible causes, some of which are
certainly not observable.

In any case, I suggest you find a good theoretical
statistician with whom you can discuss the problem
in person, and possibly more than once. You will
have to produce the model; beware of the statistician
oversimplifying it. 

-- 
This address is for information only.  I do not claim that these views
are those of the Statistics Department or of Purdue University.
Herman Rubin, Department of Statistics, Purdue University
hrubin@stat.purdue.edu         Phone: (765)494-6054   FAX: (765)494-0558

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