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Re: st: Question on Logit/Probit


From   Richard Williams <Richard.A.Williams.5@ND.edu>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Question on Logit/Probit
Date   Mon, 26 Mar 2007 00:36:29 -0500

At 11:03 PM 3/25/2007, David Cobey wrote:
I'm trying to estimate the percentage of an area under high yield variety
crops as time changes. I hoping to estimate a basic S shaped technology
diffusion model.  Can I use logit and probit for a continuous dependant
variable ranging from 0-1 or does logit/probit only work for discrete
variables?
If logit and probit won't work, how should I estimate this S shaped model?

Example of data -

Year    Percentage
1965        0
1966      .1
1967      .3
1968      .6
1969      .8
1970      .9
1971      1

Thanks!
David
These links might help:

http://www.stata.com/support/faqs/stat/logit.html

http://www.ats.ucla.edu/stat/stata/faq/proportion.htm



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Richard Williams, Notre Dame Dept of Sociology
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