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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 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)))