In data martedì 10 aprile 2012 13:34:13, Nevil Amos ha scritto:
> How do I remove a "$" character from a string sub() and gsub() with "$" or
> "\$" as pattern do not work.
>
> > sub("$","","ABC$DEF")
>
> [1] "ABC$DEF"
>
> > sub("\$","","ABC$DEF")
>
> Error: '\$' is an unrecognized escape in cha
On Saturday 09 October 2010 14:37:35 Holger Steinmetz wrote:
> Dear folks,
>
> can anybody point me in the right direction on how to conduct a hausman
> test for endogeneity in simultanous equation models?
>
> Best,
> Holger
hausman.systemfit [1] should be what you are looking for.
Cheers
Giusepp
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