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XLeratorDB/statistics Documentation

SQL Server FISHERINV function


 
Updated: 9 August 2010

Use FISHERINV to calculate the inverse of the Fisher transformation. The equation for the inverse of the Fisher transformation:
 
 FISHERINV
Syntax
SELECT [wctStatistics].[wct].[FISHERINV] (
   <@Y, float,>)
Arguments
@Y
is the value for which you want perform the inverse of the transformation. @Y is an expression of type float or of a type that can be implicitly converted to float
 
Return Types
float
Remarks
·         FISHERINV(@Y) = TANH(@Y)
Examples

select
wct.FISHERINV(0.972955074527657)
 

This produces the following result
----------------------
0.75
 
(1 row(s) affected)
 

select
wct.TANH(0.972955074527657)
 

This produces the following result
----------------------
0.75
 
(1 row(s) affected)


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