RelVar(x)

function cv = RelVar(x)

%RELVAR returns the relative variation of input matrix.
%   Also known as coefficient of variation, this statistical parameter
%   is the ratio of standard deviation divided by mean value and 
%   expressed as a percentage.

%    Copyright 2003-2010 The MathWorks, Inc.

cv = std(x(:))/mean(x(:))*100;