def _calc_skewness(self):
        data, s_dev = self.data, self.std_dev
        if len(data) > 1 and s_dev > 0:
            return (sum(self._get_pow_diffs(3)) /
                    float((len(data) - 1) * (s_dev ** 3)))
        else:
            return self.default
Get a Collection instance with the default settings.
dataset/ETHPy150Open mahmoud/boltons/boltons/statsutils.py/Stats._calc_skewness--crossover with--dataset/ETHPy150Open mongodb/mongo-python-driver/pymongo/database.py/Database._collection_default_options