Norm with matrices help

When using norm with matrices, is it the average?

Answer 1

[Star Strider]

No, it is not the average.

Assuming you intend the 2-norm, the norm of a matrix is the largest singular value.

Answer 2

[Naqvi]

In Laymen terms, norm is actually the absolute value of a vector or matrix. For example x1 = [2;1] norm (x1)= sqrt (2^2+1^2) = sqrt(4+1) = sqrt (5) = 2.2361

[Star Strider]

That is correct for the 2-norm of vectors, but not matrices.