covariance.m

来自「la methode of moindre Caree data analise」· M 代码 · 共 10 行

function  cov=covariance(x ,y );
long=length(x);
cov=0;
b=moyenne(x);
c=moyenne(y);
for i=1:long
   a=x(i)*y(i)-b*c;
   cov=cov+a/long;
end