Poisson 指令

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Poisson[ <Mean> ]
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Poisson[ <Mean>, <Boolean Cumulative> ]
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Poisson[ <Mean>, <Variable Value>, <Boolean Cumulative> ]
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CAS 視窗

Poisson[ <Mean> ]
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Poisson[ <Mean λ> ]
Returns a bar graph of a Poisson distribution with given mean λ.
Poisson[ <Mean λ>, <Boolean Cumulative> ]
Returns a bar graph of a Poisson distribution when Cumulative = false.
Returns a bar graph of a cumulative Poisson distribution when Cumulative = true.
The first parameter is same as above.
Poisson[ <Mean λ>, <Variable Value v>, <Boolean Cumulative> ]
Let X be a Poisson random variable.
Returns P( X = v) when Cumulative = false.
Returns P( X ≤ v) when Cumulative = true.
First parameter is same as above.

CAS Specific Syntax

In CAS View only one syntax is supported:

Poisson[ <Mean λ>, <Variable Value v>, <Boolean Cumulative> ]
Let X be a Poisson random variable.
Returns P( X = v) when Cumulative = false.
Returns P( X ≤ v) when Cumulative = true.
First parameter is same as above.
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