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Re: st: DASP - Gini index


From   Nick Cox <njcoxstata@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: DASP - Gini index
Date   Sun, 24 Feb 2013 12:33:17 +0000

See e.g.

http://www.stata.com/statalist/archive/2012-03/msg01099.html

http://www.stata.com/statalist/archive/2012-10/msg01345.html

for advice on getting support from DASP and reminders that you are
asked to explain the provenance of user-written programs referred to.

As you are using this package, you will have access to its Stata code.
What the code does is never less authoritative than its documentation.

Nick

On Sun, Feb 24, 2013 at 12:18 PM, kobi warszawski
<kobi.warszawski@gmail.com> wrote:

> I have been using the DASP package to calculate the Gini index with
> weights (my data has two columns - income and number of employees
> earning that income (as weights).
>
> The Gini index results which I get from STATA are around half the Gini
> index which I get when I calculate the Gini index as twice the area
> between the Lorenz curve and perfect equality (45 degrees line).
>
> When I calculate the Gini with the covariance formula I get the same
> results as when I calculate the areas (Lorenz curve).
>
> Wat am I doing wrong with the DASP package? does anyone know how the
> Gini formula in section 13.1 of the DASP manual is developed?
>
> Thank you, Kobi
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