Statalist


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: st: ST: OLS prediction


From   Austin Nichols <[email protected]>
To   [email protected]
Subject   Re: st: ST: OLS prediction
Date   Sun, 27 Sep 2009 08:36:22 -0400

See
-help predict-
for a start, and try

sysuse auto
reg price mpg turn
predict yhat
tempvar t
ren mpg `t'
g mpg=`t'+10
predict yhat10
drop mpg
ren `t' mpg
g dy=yhat10-yhat
li price yh* dy in 1/10



On Fri, Sep 18, 2009 at 1:00 PM, Laura Platchkov <[email protected]> wrote:
> Dear all,
>
> I have a cross sectional dataset, and use OLS. This is the model:
>
> ln(Y) = b1 + b2X + b3Z + e
>
> I would like to do some predictions to compare the change in Y when the X has, let say 10 units more:
>
> ln(Y)* = b1 + b2(X+10) + b3Z + e
>
> and compare the change:
>
> Y*- Y
>
> How can I do exactly? I have created a new dataset with the modified values of the regressors, but I don't know which command I should use to compute the value of the dependent ln(y*) with the new regressors.
*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/



© Copyright 1996–2024 StataCorp LLC   |   Terms of use   |   Privacy   |   Contact us   |   What's new   |   Site index