设A、B是两个事件,若P(AB)=P(A)P(B),则我们称事件A,B独立.在概率的学习中,两个事件的独立性是一个重要的概念,对于两事件是否独立,实际在应用时,常根据问题的实际情况(比如各次射击命中与否等等)凭经验和直觉来判定,因此许多人常常认为:按定义P(AB)=P(A)P(B)判定事件A,B的独立 Let A and B be two events. If P(AB)=P(A)P(B), we call the events A and B independent. In the study of probability, the independence of two events is an important concept. Whether or not the two events are independent is actually determined by experience and intuition according to the actual situation of the problem (such as each shooting hit or not, etc.), so many people often think: P(AB)=P (A) P(B) determines the independence of events A and B