Joao,
Read the FAQ "How do I test for panel-level heteroskedasticity and
autocorrelation?"
http://www.stata.com/support/faqs/stat/panel.html
Friedrich
--- "Joao Ricardo F. Lima" <[email protected]> wrote:
> Hi,
>
> i`m needing help, please. I`m working with data panel and need make
> a test for heterocedasticity.
>
> Thanks a lot
>
> Joao Ricardo Lima
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