Scott,
I think you might have misunderstood Nick's point. When he says that most
of your questions require recourse to a standard text, he probably means,
not a Stata text or the manuals, but a standard econometrics or statistics
textbook (e.g., on how to calculate Newey-West-style standard errors - their
procedure is not a test).
BTW, if you believe you have autocorrelation, heteroskedasticity, and
multicollinearity problems, it's possible that your omitted variable test
isn't valid (isn't robust in the presence of the problems).
--Mark
Quoting Goodall S <[email protected]>:
> Unfortunately, although I have spent just about every waking minute
> for the
> past week in front of a screen with Stata 8.2 imprinted on it I
> haven't been
> able to grasp its capabilities very well. I have not found
> information on
> the net or in the textbooks conclusive or straghtforward.
> Furthermore, I do
> not have a copy of the Stata manual nor have time enough to wait for
> it to
> arrive as my work is to finished very soon. I'm sorry to have
> bothered you
> all for some simple advice, I did not realize it would cause such a
> problem
>
> Scott
>
> Nick Cox
>
> Please don't send formatted text to Statalist
> Please do use sensible titles. These points,
> and other well-meant advice, are explained
> in the Statalist FAQ, the URL of which is
> at the bottom of every Statalist posting.
>
> There is a Newey-West command in Stata: its
> help is accessible at -whelp newey-
> and there is more in the manuals at [TS] newey.
>
> Most of your other questions seem to require
> recourse to a standard text, at least in
> the first instance.
>
> Nick
> [email protected]
>
> Scott Goodall
>
> I am attempting to develop a model for my dissertation.
> I would like to develop a very simple model with house prices
> as my left-hand side variable and rent, income, mortgage rent,
> and CPI as my right hand-side variables. I have collected my data,
> formatted my data (including putting several variables in real
> terms)
> and found that I have the best model available to me (in terms of
> ommited variables at least). I have come to the conclusion that my
> model has no ommitted variables and is normal, but does suffer
> from
> autocorrelation, heteroscedasticity, and multicollinearity. Is it
> true
> that I can correct for autocorrelation and heteroscedasticity using
> a
> Newey West test? If so, would you be so kind as to give me
> specific
> details of how to perform this test and how to interpret its
> results?
> Also, any other suggestions or help would be much appreciated.
>
> *
> * For searches and help try:
> * http://www.stata.com/support/faqs/res/findit.html
> * http://www.stata.com/support/statalist/faq
> * http://www.ats.ucla.edu/stat/stata/
>
> *
> * For searches and help try:
> * http://www.stata.com/support/faqs/res/findit.html
> * http://www.stata.com/support/statalist/faq
> * http://www.ats.ucla.edu/stat/stata/
>
Prof. Mark Schaffer
Director, CERT
Department of Economics
School of Management & Languages
Heriot-Watt University, Edinburgh EH14 4AS
tel +44-131-451-3494 / fax +44-131-451-3294
email: [email protected]
web: http://www.sml.hw.ac.uk/ecomes
-------------------------------------------------------------------
DISCLAIMER
This message is subject to http://www.hw.ac.uk/disclaim.htm
-------------------------------------------------------------------
*
* For searches and help try:
* http://www.stata.com/support/faqs/res/findit.html
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/
