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Diagnosing Multicollinearity

Hello! I was checking the course notes and on the slide "More on diagnosing Multicollinearity", we consider the spectral decomposition of the matrix (X^TX), but this matrix isn't always symethric! I'm a bit confused. Thanks in advanced, best wishes,

 

 

Agustin

Posted by Agustín Iglesias Villacampa on Wednesday 18 December 2013 at 15:27
Comments
Forget the question :) I
Posted by Agustín Iglesias Villacampa on Wednesday 18 December 2013 at 17:38