> >The regression analysis is also somewhat confusing.  Regression analysis is
> >based on the fact that the Y (dependent variable) is random and the X
> >(independent variable) is fixed with no error.  For my case, both X and Y are
> >random and have some measurement error.  Is it correct to use simple linear
> >regression for this analysis or is there another type of analysis to obtain
> >predictions?
>
dennis roberts wrote: 
 
> the problem with regression analysis ... at using r too ... is that lack of
> regression (that is ... perfect linear relationship between true and proxy)
> could be because of problems with either X or Y or both ... a simple
> regression analysis will have an error term ... but, what is it due to? you
> don't know ... even in your case ... is the 'true' REALLY true? or .. just
> the best you can do?

To Dennis.

I m sorry the question of Mike is:

When the IDV variable (X) is random is it correct to use simple linear
regression ????? It is very important question in it's general context,
that you have not really responded.

|=======================================================|
| Hassane ABIDI (PhD)                                   |
| Unite d'Epidemiologie; Centre Hospitalier Lyon-Sud    |
| Pavillon 1.M, 69495 Pierre Benite Cedex, France       |
| Tel:  (33) 04 78 86 56 87 ;  Fax: (33) 04 78 86 33 31 |
| E. mail: [EMAIL PROTECTED]              |
|=======================================================|


===========================================================================
This list is open to everyone.  Occasionally, less thoughtful
people send inappropriate messages.  Please DO NOT COMPLAIN TO
THE POSTMASTER about these messages because the postmaster has no
way of controlling them, and excessive complaints will result in
termination of the list.

For information about this list, including information about the
problem of inappropriate messages and information about how to
unsubscribe, please see the web page at
http://jse.stat.ncsu.edu/
===========================================================================

Reply via email to