List of utility methods to do Matrix Covariance

double[][] | covarianceMatrix(double[][] data) Compute the covariance matrix between all column pairs (variables) in the multivariate data set ```
return covarianceMatrix(data, means(data));
``` |

double[][] | covarianceMatrix(double[][] data) Compute the covariance matrix between all column pairs (variables) in the multivariate data set ```
return covarianceMatrix(data, means(data));
``` |