Statistics Dictionary

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Scalar Matrix

Scalar matrix. A scalar matrix is a special kind of diagonal matrix. It is a diagonal matrix with equal-valued elements along the diagonal. Two examples of a scalar matrix appear below.

A =    
3 0
0 3
B =    
5 0 0
0 5 0
0 0 5

The identity matrix is also an example of a scalar matrix.

See also:   Matrix Types