“independent events”的概念、定义、习题解题方法及翻译-数学辞典

单词

independent events

释义

independent events

Events A and B are independent if the occurrence of either does not affect the probability of the other occurring. Otherwise, A and B are dependent. For independent events, the probability that they both occur is given by the product law Pr(A ∩ B) = Pr(A) Pr(B). This is equivalent to the conditional probability Pr(A | B) equalling Pr(A), provided Pr(B)≠0.

For example, when an unbiased coin is tossed twice, the probability of obtaining ‘heads' on the first toss is $inline$ , and the probability of obtaining ‘heads' on the second toss is $inline$ . These two events are independent. So the probability of obtaining ‘heads' on both tosses is equal to $inline$ .

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数学辞典收录了4151条数学词条，基本涵盖了常用数学知识及数学英语单词词组的翻译及用法，是数学学习的有利工具。