As always, excellent advice by Nick! I highly appreciate it.
Many thanks and Have A Great Day!
On Tue, Feb 17, 2009 at 8:35 AM, Nick Cox <[email protected]> wrote:
> I wouldn't use -nl- to estimate this rate. On the face of it, it is more
> natural to take logs and then fit a regression in each panel. You can do
> that using -statsby- to pick up the regression slopes. Then -merge- back
> to your original dataset.
>
> Nick
> [email protected]
>
> Quang Nguyen
>
> I have the following sample data set:
>
> Household x y t
> 1 60 120 7
> 1 120 100 30
> 1 100 300 60
> 1 50 250 900
> ...
> 2
> 2
> 2
> ...
> I would like to estimate the discount rate for each household based
> on the fomular: x = y*exp(-rt), where r is the interest rate. I know
> that in Stata we can use: nl (x=y*(exp(*-{r}*t) for each household. My
> questions are:
>
> 1. How we can ask State to do the the above estimate for all household
> at the same time instead of one by one?
>
> 2. How can we save the ESTIMATED discount rates as an variable that
> can be used for latter analysis? For instance, on emay study the
> relationship between the household's discount rate and the educational
> level.
>
>
> *
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> * http://www.ats.ucla.edu/stat/stata/
>
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