说明：  数据集基本统计参数计算，例如平均值、均方差、最大值、最小值、1/4分位值、2/4分位值、3/4分位值、峰度系数、偏度系数、异常下限等。使用迭代算法实现。
(A program for statistic parameters from a dataset, such as the means, STD variation, MinX, MaxX, 1/4 quatitile, 2/4 quatitile, 3/4 quatitile, Kut. and Skew. coefficients, thresholds of anomaly. An iteration algorithm is used.)