def get_rms(self):
        """Gets the root mean square of the score.

        If this system is based on grades, the RMS of the output score
        is returned.

        return: (decimal) - the median score
        *compliance: mandatory -- This method must be implemented.*

        """
        return np.sqrt(np.mean(np.square(self._entry_scores)))
Gets the root mean square of the score.

        If this system is based on grades, the RMS of the output score
        is returned.

        return: (decimal) - the median score
        *compliance: mandatory -- This method must be implemented.*