Linear Algebra

1. Mean centering does not affect the covariance matrix

[..] Even centering only one variable, e.g., x wouldn’t affect the covariance [..]

CONFUSION MATRIX: 

Hmm, a wild guess maybe but I see where that name comes from :p

So, in such a matrix how can I picture coefficients and variables being allocated??

If for example I wnated to write as a matrix the results of bloodwork test for 5 patients/samples.

What would the piture actually be of that matrix?

Και ποια θα ήταν η φυσική σημασία της λύσης του συστήματος?

The scalar triple product (also called the mixed product, box product, or triple scalar product) is defined as the dot product of one of the vectors with the cross product of the other two.