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Re: st: Regressions with dependent continuous variable with bounded range
From 
 
Nick Cox <[email protected]> 
To 
 
"[email protected]" <[email protected]> 
Subject 
 
Re: st: Regressions with dependent continuous variable with bounded range 
Date 
 
Sat, 17 Dec 2011 19:30:35 +0000 
In this case
twoway qfit mpg weight
is an alternative.
Nick
On 17 Dec 2011, at 19:17, [email protected] (Brendan Halpin) wrote:
On Sat, Dec 17 2011, Suryadipta Roy wrote:
I would very much appreciate some help as to how to interpret the  
sign
of the coefficient associated with the squared term of an explanatory
variable in such a model.
The best way of interpreting it is graphically. For example:
sysuse auto
reg mpg c.weight##c.weight
twoway function x*_b[weight] + x^2*_b[c.weight#c.weight], range 
(weight)
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