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st: RE: Negative incomes and income components using -sgini-


From   Nick Cox <n.j.cox@durham.ac.uk>
To   "'statalist@hsphsun2.harvard.edu'" <statalist@hsphsun2.harvard.edu>
Subject   st: RE: Negative incomes and income components using -sgini-
Date   Thu, 28 Apr 2011 14:19:45 +0100

. findit sgini 

got hits, but none that matched -sgini- exactly. In any case, it is the poster's duty to explain where user-written programs referred to come from. 

Nick 
n.j.cox@durham.ac.uk 

David Coyne

I've been attempting to decompose the Gini coefficient of a measure C,
where C=A-B. I have two questions related to this. First, if C has some
values that are negative, how does this affect the interpretation of the
Gini coefficient? Second, if B is nonnegative, (i.e. using -sgini- would
have me use C=A + (-B), so if (-B) < 0 for all observations) thus leaving
me with a negative contribution (s*g*r) to the Gini coefficient of C, does
that mean that B has an equalizing effect on C? Not sure of the
interpretation of this. Any insight and/or advice would be appreciated!

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