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XLeratorDB/statistics Documentation

SQL Server HYPGEOM.DIST function


HYPGEOMDISTQ
 
Updated: 9 August 2010

Use HYPGEOMDISTQ to calculate the upper cumulative distribution of the hypergeometric function. The formula is:

HYPGEOMDISTQ SQL Server function (XLeratorDB)
 
Where
k              is the number of successes in the sample
N             is the size of the sample
m            is the number of successes in the population
n             is the population size
Syntax
SELECT [wctStatistics].[wct].[HYPGEOMDISTQ] (
   <@Sample_s, float,>
 ,<@Number_sample, float,>
 ,<@Population_s, float,>
 ,<@Number_population, float,>)
Arguments
@Sample_s
is the number of successes in the sample. @Sample_s is an expression of type float or of a type that can be implicitly converted to float
@Number_sample
is the size of the sample. @Number_sample  is an expression of type float or of a type that can be implicitly converted to float
@Population_s
is the number of successes in the population. @Population_s is an expression of type float or of a type that can be implicitly converted to float
@Number_population
is the population size. @Number_population is an expression of type float or of a type that can be implicitly converted to float
Return Types
float
Remarks
·         If @Sample_s < 0 or @Sample_s > MIN(@Number_sample, @Population_s), HYPGEOMDISTQ returns an error.
·         If @Sample_s < MAX(0, @Number_sample-@Number_population+@Population_s), HYPGEOMDISTQ returns an error.
·         If @Number_sample ≤ 0 or @Number_sample > @Number_population, HYPGEOMDISTQ returns an error.
·         If @Population_s ≤ 0 or @Population_s > @Number_population, HYPGEOMDISTQ returns an error.
·         If @Number_population ≤ 0, HYPGEOMDISTQ returns an error.
Examples
SELECT wct.HYPGEOMDISTQ(20,900,45,2000)

This produces the following result
----------------------
0.587952023305958
 

(1 row(s) affected)



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