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高考概率题是以实际应用问题为载体,主要考查排列组合及概率等知识,突出考查概率统计的思想方法以及分析问题、解决问题的能力.学生在学习概率时,经常容易出错,下面就学生考试及作业中易混淆的一些问题,进行对比辨析.一、“互斥事件”与“相互独立事件”(1)事件的“互斥”与“相互独立”是两个不同的概念,两个事件互斥是指两个事件不可能同时发生,两个事件相互独立是指一个事件的发生对另一个事件是否发生没有影响.
Probability of the college entrance examination probability is based on the practical application of the carrier as the carrier, the main test arrangement and probability and other knowledge, highlighting the way to think about probability and statistics, as well as analysis of the problem, the ability to solve problems.Students in learning probability, often error prone, following the student exam And confusion in the operation of a number of issues, for comparative analysis. First, the “mutual exclusion event” and “independent events” (1) the event’s “mutual exclusion” and “independence” are two A different concept, the mutual exclusion of two events means that two events can not occur at the same time. The two events are independent of each other. It means that the occurrence of one event has no effect on the occurrence of another event.