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几何分布的无记忆性如何理解

更新时间: 2020-08-17 00:00:00     

无记忆性即后面事件发生的概率与前面事件是否发生无关。

几何分布是离散型概率分布。其中一种定义为:在n次伯努利试验中,试验k次才得到第一次成功的机率。详细地说是:前k减1次皆失败,第k次成功的概率。几何分布是帕斯卡分布当r等于1时的特例。

关键词: 几何 分布 记忆 如何 理解

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