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st: Estimating Power law distributions


From   emanuele canegrati <emanuele.canegrati@hotmail.it>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: Estimating Power law distributions
Date   Mon, 27 Apr 2009 12:13:28 +0200

Dear Stata users,
 
I have to check if the cumulative distribution of a series, say Sj, is consistent with a power law, say Prob{S>x} distas x*exp(-aSj). I should normalize my series by transforming it to zero mean and unit s.d. Then I should evaluate the value for the exponent aSj. Do you know how to do it? 
 
Thank you.
 
Emanuele Canegrati, Ph.D.
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