Difference between revisions of "Poisson Command"

Revision as of 12:18, 18 July 2011

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.

In CAS View only one syntax is allowed:

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.

@@ Line 1: / Line 1: @@
 <noinclude>{{Manual Page|version=4.0}}</noinclude>
 {{command|probability}}
-;Poisson[ <Mean>, <Variable Value> , <Boolean Cumulative> ]
+;Poisson[ <Mean λ> ]
-:{{description}}
+: Returns a bar graph of a [[w:Poisson distribution|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 allowed:
+;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.