class OLSMultipleLinearRegression extends AbstractMultipleLinearRegression {

    public double calculateRSquared() throws MathIllegalArgumentException {
        return 1 - calculateResidualSumOfSquares() / calculateTotalSumOfSquares();
    }

    public  OLSMultipleLinearRegression();
    public  OLSMultipleLinearRegression(final double threshold);

}