研究方法：运用统计学基本知识，把收集到的复合标报价数据分类、整理，制成样本，通过对样本数据的统计、对比、分析，找出各种数据分布规律，计算各种数据之间比例关系，对出现频率较高的数值和比例关系，进 行重点研究，把它们放在其它同类样本内进行检算，从中找到能够普遍适用的代表值或中心值。总的研究思路是：从已知的各种数据中计算未知的概率，再从已知的概率中探索其它未知的数据。

Research methods: The collected data on offer for integral bidding were sorted and made into specimens through using basic knowledge of statistics. The regularity of distribution of variable data was found and the proportionate relation among variable data was calculated through statistics, comparison and analysis of the data in specimen. The research was made mainly on the proportionate relation and numerical value that occurred frequently. The checking calculation was made to them by putting them in similar specimen in order to find out the universally typical value or central value. The general research thought was to know unknown probability through calculating known variable data and explore other unknown data from known probability.