一统计规律性是概率论和数理统计中的一个基本概念。按照概率统计理论看来,个别随机现象是没有一定规律性的,但大量性质相同的随机现象则是有一定规律性可寻的。实践证明,研究了大量的同类随机现象后,通常是能够揭露出 A regularity of statistics is a basic concept in probability theory and mathematical statistics. According to the theory of probability and statistics, individual random phenomena do not have certain regularity, but a large number of random phenomena with the same nature have certain regularities to be found. Practice has proved that after studying a large number of similar random phenomena, it is usually able to reveal