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st: How to avoid negative fitted values

From   Laurie Molina <>
Subject   st: How to avoid negative fitted values
Date   Fri, 20 Aug 2010 21:26:34 -0500

Dear statalist,

I am triying to imput rental prices for houses to a sample using some
characteristics of the construction which are shared between my data
and the data in another database in which rental prices are declared.

When i use OLS i get negative fitted values both in the original
database as in my database.

How can ensure that the predicted values will be non negative?

Thank you very much in advance.

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