slib_lang_exists_tmp=yes

slib_title=Matrix of covariance
slib_parms=1\
 ,[datax;datay] or [datax],[datay]

slib_out=first line : matrix of  standart covariance sum((x_i-mean_x)*(y_i-mean_y),i=1,n)/n\
 second line : matrix of covariance sum((x_i-mean_x)*(y_i-mean_y),i=1,n)/(n-1)

slib_comment=Data can be recognized under many formats, \
 in particular as a matrix.


