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XLeratorDB/statistics Documentation

SQL Server NORM.S.DIST function


NORMSDIST
 
Updated: 01 February 2009 

Use NORMSDIST to calculate the standard normal cumulative distribution function.  The equation for the cumulative distribution function is:
 
 NORMSDIST
Syntax
SELECT [wctStatistics].[wct].[NORMSDIST] (
   <@X, float,>)
Arguments
@X
is the value at which to evaluate the function. @X is an expression of type float or of a type that can be implicitly converted to float
Return Types
float
Examples

select
wct.NORMSDIST(1)

This produces the following result
 
----------------------
0.841344746068543
 
(1 row(s) affected)
 

select
wct.NORMSDIST(-1)

This produces the following result
 
----------------------
0.158655253931457
 
(1 row(s) affected)
 

select
wct.NORMSDIST(1)-wct.NORMSDIST(-1)

This produces the following result
 
----------------------
0.682689492137086
 
(1 row(s) affected)
See Also


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