众所周知,在中学数学中,代数、几何等内容与概率统计的内容具有很不相同的特点.前者所涉及的问题一般都有唯一、确切的答案,肯定与否明确.因此,通常是运用比较纯粹、严格和程式化的方式去分析和解决这类数学问题.而概率统计的问题就很不一样,比如,知道明天的降雨概率是90％,后天的降雨概率是10％,但并不能确切知道明、后 As we all know, in middle school mathematics, the contents of algebra, geometry, etc. have very different characteristics from the content of probability statistics. The problems involved in the former generally have unique and exact answers. They are definitely or not clear. Therefore, the use of relatively pure A rigorous and stylized way to analyze and solve such mathematical problems. The problems of probability statistics are very different. For example, knowing that tomorrow’s rainfall probability is 90%, the probability of the acquired rain is 10%, but it is not known exactly. Ming and later