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条件概率与积事件概率本来是意义非常明确的两个不同概念,一些简单的题目也很容易判别。但是初学者在一些稍复杂一点的问题中却往往将这两种概率问题张冠李戴,导致错误的结果。对此,我在多年的教学中感到这是概率中解题差错率较高的部分,应予足够的重视,不但学生出错,就连有些题解,以及做为中央电
The conditional probability and the product event probability are originally two different concepts with very clear meaning. Some simple topics are also easy to distinguish. However, beginners tend to put these two kinds of probability problems together in some slightly more complicated problems, leading to erroneous results. In this regard, I felt in the teaching of many years that this was a part of the probability that the probability of error in the solution was high and should be given enough attention. Not only were students making mistakes, but even some problems were solved.