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st: linear and non-linear regression


From   tashi lama <ltashi32@hotmail.com>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: linear and non-linear regression
Date   Thu, 14 Jun 2012 17:00:56 +0000

Hello all, 

     The key to fitting a line to a linear looking scatter plot is OLS, abbreviation for Ordinary Least Square. Does Stata use Ordinary Least Square technique to fit non linear line to a non linear looking scatter plot? Does anyone have any clue? Is it necessary that we check whether the residuals are normally distributed, the distribution is homoskedastic etc etc before running any types of regression?

 

Thanx... 		 	   		  
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