Probability(概率) .Probability is the numerical Certain measure of the likelihood 必然的 that the event will occur o Value is between o and 1 Sum of the proba bilities of all mutually exclusive(互斥 的) events is1. 0 Impossible 不可能的
Probability（概率） •Probability is the numerical measure of the likelihood that the event will occur. •Value is between 0 and 1. •Sum of the probabilities of all mutually exclusive（互斥 的）events is 1. Certain 必然的 Impossible 不可能的 .5 1 0
计算事件的概率--键确定有效事件与全部事件 有效事件数 The Probability of an Event, Es Number of Event Outcomes P(E)= Total Outcomes in Sample space T 样本空间事件总数 P )=2/36 (There are 2 ways to get one 6 and the other 4) .Each of the Outcome in the Sample space equally likely to occur(等概率发生)
计算事件的概率----关键确定有效事件与全部事件 •The Probability of an Event, E: •Each of the Outcome in the Sample Space equally likely to occur(等概率发生). Total Outcomes in Sample Space Number of Event Outcomes P(E) = T X = e.g. P( ) = 2/36 (There are 2 ways to get one 6 and the other 4) 有效事件数 样本空间事件总数