模拟数量分布

根据数量分布模拟等待时间.

In[1]:=

wait\[ScriptCapitalD] = QuantityDistribution[ExponentialDistribution[.4], "Minutes"]

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一个观测即是一个 Quantity.

In[2]:=

RandomVariate[wait\[ScriptCapitalD]]

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多条观测的样本组成一个 QuantityArray.

In[3]:=

sample = RandomVariate[wait\[ScriptCapitalD], 100]

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用 Histogram 可视化样本.

In[4]:=

Histogram[sample, AxesLabel -> Automatic]

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计算样本的几个选定的描述性统计量.

In[5]:=

stats = {Mean, Median, Min, Max}; TableForm[Map[#[sample] &, stats], TableHeadings -> {stats, None}]

Out[5]//TableForm=