Difference between revisions of "Documentation/How Tos/Calc: GAMMADIST function"

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{{DISPLAYTITLE:GAMMADIST function}}
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== GAMMADIST ==
 
== GAMMADIST ==
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=== Syntax: ===
 
=== Syntax: ===
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<tt>'''GAMMADIST(x; &alpha;; &lambda;; mode)'''</tt>
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<tt>'''GAMMADIST(x; &alpha;; &beta;; mode)'''</tt>
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: The gamma distribution is a family of continuous probability distributions, with two controlling parameters <tt>'''&alpha;'''</tt> and <tt>'''&lambda;'''</tt>.
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: The gamma distribution is a family of continuous probability distributions, with parameters <tt>'''&alpha;'''</tt> (shape) and <tt>'''&beta;'''</tt> (scale).
  
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: If mode is <tt>'''0'''</tt>, <tt>'''GAMMADIST'''</tt> calculates the probability density function of the gamma distribution.
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: If mode is <tt>'''0'''</tt>, <tt>'''GAMMADIST'''</tt> calculates the probability density function of the gamma distribution:
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::[[Image:Calc_gammadist0_equation.png]]
  
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: If mode is <tt>'''1'''</tt>, <tt>'''GAMMADIST'''</tt> calculates the cumulative distribution function of the gamma distribution.
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: If mode is <tt>'''1'''</tt>, <tt>'''GAMMADIST'''</tt> calculates the cumulative distribution function of the gamma distribution:
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::[[Image:Calc_gammadist1_equation.png]]
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: <tt>'''x'''</tt> must be greater than or equal to <tt>'''0'''</tt>.
  
 
=== Example: ===
 
=== Example: ===
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: returns approximately 0.86.
 
: returns approximately 0.86.
  
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=== See also: ===
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{{SeeAlso|EN|
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[[Documentation/How_Tos/Calc: GAMMAINV function|'''GAMMAINV''']]
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* [[Documentation/How_Tos/Calc: GAMMAINV function|GAMMAINV]]
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* [[Documentation/How_Tos/Calc: Statistical functions|Statistical functions]]
  
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[[Documentation/How_Tos/Calc: Statistical functions|'''Statistical functions''']]
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* [[Documentation/How_Tos/Calc: Functions listed alphabetically|Functions listed alphabetically]]
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* [[Documentation/How_Tos/Calc: Functions listed by category|Functions listed by category]]}}
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[[Category: Documentation/Reference/Calc/Statistical functions]]

Latest revision as of 14:00, 2 February 2024



GAMMADIST

Calculates values for a gamma distribution.

Syntax:

GAMMADIST(x; α; β; mode)

The gamma distribution is a family of continuous probability distributions, with parameters α (shape) and β (scale).
If mode is 0, GAMMADIST calculates the probability density function of the gamma distribution:
Calc gammadist0 equation.png
If mode is 1, GAMMADIST calculates the cumulative distribution function of the gamma distribution:
Calc gammadist1 equation.png
x must be greater than or equal to 0.

Example:

GAMMADIST(2; 1; 1; 1)

returns approximately 0.86.


See Also
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