Updated: 9 August 2010

Use FISHERINV to calculate the inverse of the Fisher transformation. The equation for the inverse of the Fisher transformation:

SELECT [wctStatistics].[wct].[FISHERINV] (

<@Y, float,>)

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**.

float

· FISHERINV(*@Y*) = TANH(*@Y*)

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)