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必修3概率部分主要涉及两大概率模型:古典概型和几何概型.有的等可能事件背景材料复杂,应先根据题目所提供的信息,建立起概率模型,然后再转化为简单的等可能性事件的概率问题.古典概型与几何概型就是其中两类最基本的、最重要的概率模型.一、古典概型与几何概型关系1.古典概型与几何概型的共同点是:都具有等可能性,非负性(对任意事件A,有0≤P(A)≤1)、规范性(必然事件概率为1,不可能事件概率为0)
The compulsory 3 probabilistic part mainly involves two major probabilistic models: classical probabilistic and geometric probabilistic. Some possible events and other background materials are complex. The probabilistic model should be established first according to the information provided by the topic, and then transformed into simple probabilistic ones. Probability issues of sexual events. Classical probabilistic and geometrical probabilities are two of the most basic and most important probabilistic models. First, the relationship between classical probabilistic models and geometric probabilistic models 1. The common features of classical probabilistic models and geometric models are : all have the possibility, non-negative (for any event A, 0 ≤ P(A) ≤ 1), normative (necessary event probability is 1, impossible event probability is 0)