"As in the case of simple regression, this is rarely a meaningful interpretation, since in most marketing models the only way for all the independent variables to go to zero is for the world to end (which is well outside the relevant range of the data and tends to make the interpretation meaningless)." *
Random things from different time periods.
![](http://i192.photobucket.com/albums/z198/rue_avalon/secondfloor.jpg)
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