@staticmethod
def _get_sample_size_from_est_error(est_err):
    '\n    :return: sample size\n\n    Calculate sample size from estimation error\n    '
    return int(math.ceil((4.0 / math.pow(est_err, 2.0))))
:return: sample size

Calculate sample size from estimation error
@staticmethod
def _get_sample_size_from_est_error(est_err):
    '\n    :return: sample size\n\n    Calculate sample size from estimation error\n    '
    return int(math.ceil((4.0 / math.pow(est_err, 2.0))))