Difference between revisions of "Poisson Command"

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(bar graph is a just a graph when cumulative==true)
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;Poisson[ <Mean>, <Boolean Cumulative> ]
 
;Poisson[ <Mean>, <Boolean Cumulative> ]
 
:Returns a bar graph of a Poisson distribution when ''Cumulative = false''.  
 
:Returns a bar graph of a Poisson distribution when ''Cumulative = false''.  
:Returns a bar graph of a cumulative Poisson distribution when ''Cumulative = true''.
+
:Returns a graph of a cumulative Poisson distribution when ''Cumulative = true''.
 
:The first parameter is same as above.
 
:The first parameter is same as above.
 
;Poisson[ <Mean>, <Variable Value v>, <Boolean Cumulative> ]
 
;Poisson[ <Mean>, <Variable Value v>, <Boolean Cumulative> ]

Revision as of 07:30, 4 October 2013



Poisson[ <Mean> ]
Returns a bar graph of a Poisson distribution with given mean λ.
Poisson[ <Mean>, <Boolean Cumulative> ]
Returns a bar graph of a Poisson distribution when Cumulative = false.
Returns a graph of a cumulative Poisson distribution when Cumulative = true.
The first parameter is same as above.
Poisson[ <Mean>, <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 Syntax

Poisson[ <Mean>, <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.
Examples:
  • Poisson[3, 1, true] yields \frac{4}{e³}.
  • Poisson[3, 1, false] yields \frac{3}{e³}.
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