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XLeratorDB/statistics Documentation

SQL Server STANDARDIZE function


 
Updated: 9 August 2010

Use STANDARDIZE to calculate a normalized value from a distribution characterized by mean and standard deviation:
 
 STANDARDIZE
Syntax
SELECT [wctStatistics].[wct].[STANDARDIZE] (
   <@X, float,>
 ,<@Mean, float,>
 ,<@Standard_dev, float,>)
Arguments
@X
is the value to be normalized. @X is an expression of type float or of a type that can be implicitly converted to float
@Mean
is the arithmetic mean of the distribution. @Mean is an expression of type float or of a type that can be implicitly converted to float
@Standard_dev
is the standard deviation of the distribution. @Standard_dev is an expression of type float or of a type that can be implicitly converted to float
Return Types
float
Remarks
·         If @Standard_dev ≤ 0, STANDARDIZE returns an error
Examples

Select
wct.STANDARDIZE(-4.6159,10,5)

This produces the following result
 
----------------------
-2.92318
 
(1 row(s) affected)
See Also


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