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Re: st: AW: Tobit, negative predictesd values


From   Austin Nichols <austinnichols@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: AW: Tobit, negative predictesd values
Date   Tue, 10 Nov 2009 11:43:14 -0500

If no training was offered, that sounds like zero intensity to me.  Am
I missing something?

On Tue, Nov 10, 2009 at 11:06 AM, Solorzano Mosquera, Jenniffer
<jenniffers@iadb.org> wrote:
> Actually, I took as 0's those missing values of the firms whose answer to the question "Did you offered training to your employees this year?" was negative. In fact, when the answer was not they didn't have to answer anything about intensity. In thaht case, intensity only could be larger than 0. But, as Zwick estimated in his paper, he tooks the whole sample, those who answered yes and no in the offering training question. I still don't understand why.
>

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