> X_norm = (X - (t * mu)) ./ (t * sigma); %vectorized
> In above Octave code, if X is 97 x 3 matrix then will it implicitly get
> converted to column vector?
I do not see any operation there that would reduce the size of the X
matrix. so i dare say no, that wont happen.
If this is a norm, you probably need some matrix product against a
transpose of X or something on that line.