多重正态母体分解问题,是物性统计和物化探异常下限确定工作中经常遇到的一个实际问题.过去是用手算的方法对样本数据进行分组、求频数和累频,然后,在概率格纸上用图解法绘出总体中各母体的统计特征量.由于工作量太大和图解法的精度所限,所以分组数和拐点的确定 The problem of multiple normal matrix decomposition is a practical problem often encountered in the determination of the lower limit of physical property statistics and geophysical and geochemical anomalies.In the past, the sample data were grouped, frequency-calculated and frequency-accumulated in the past by hand method. Then, On the paper, the statistical features of each parent in the population are plotted graphically, and the determination of the number of packets and the inflection point is limited due to the heavy workload and the limited accuracy of the graphical method