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概率是高考的重点内容之一,是衔接初等数学与高等数学的重要知识.这部分内容由于问题情境源于生活实际,贴近生活,学生乐学且易于接受;但这部分内容的新概念较多,相近概念容易混淆,学生感觉易做但易错.本文仅就学生易犯错误类型略举数例作一些剖析,仅供参考.一、是否等可能问题等可能事件的概率:如果一次试验中可能出现的结果有n个,而且所有结果都是等可能的.如果事件A包含m个结果,那么事件A的概率P(A)=m/n
Probability is one of the key contents of college entrance examination and is an important knowledge of linking elementary mathematics and advanced mathematics.This part of the content is due to the fact that the problem situation stems from the reality of life, is close to life, and learns well and is easy to accept. However, , Similar concepts easily confused, students feel easy to do but easily wrong.This article only on the type of student easy to make mistakes to give some analysis of a few examples, for reference purposes only. First, whether the probability of such possible issues such as probabilities: If a test There may be n possible results, and all the results are equally possible. If event A contains m results, the probability of event A is P (A) = m / n