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std::poisson_distribution::mean

STD：：Poisson[医]分布：：平均数

double mean() const;​(since C++11)

返回使用该分布构造的μ参数。该参数定义事件发生的平均次数。默认值是1.0...

参数

%280%29

返回值

浮点值识别μ分布参数。

另见

paramgets or sets the distribution parameter object (public member function)

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