Programming the statistical procedures from SAS

Regression Technique

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Occasional Contributor
Posts: 16

Regression Technique

If your dependent variable is a continuous variable but is bounded between 0 and 100, what type of regression analysis would work best? 

Respected Advisor
Posts: 4,754

Re: Regression Technique

Assuming that your dependent variable is a percentage, you should consider transforming it for doing regression. Good documentation on this topic is given in SAS/IML doc  :

 

http://support.sas.com/documentation/cdl/en/imlsug/66113/HTML/default/viewer.htm#imlsug_ugvartransfo...

 

 

arcsin(sqrt(y)) (where y is between 0 and 1) is the preferred transformation when the denominators of the proportions are within the same order of magnitude.

PG
Occasional Contributor
Posts: 16

Re: Regression Technique

Thanks! The depdenent variable is not a percentage, it's a ranking (0 is lowest, 100 is highest and have values all throughout).

 

But I assume I could divide all variable by 100 and use that technique?

Super User
Posts: 9,775

Re: Regression Technique

I could try GAMMA distribution.
Check the example of GENMOD.

Example 44.3: Gamma Distribution Applied to Life Data



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