Brian Dunning's FileMaker Custom Functions

QuantileNormal ( mean ; standardDeviation ; p )

Inverse normal cumulative distribution function

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Jeremy Bante   Jeremy Bante

https://github.com/jbante/

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  Sample input:
List (
QuantileNormal ( 1 ; 2 ; .3 ) ;
QuantileNormal ( 3 ; 2 ; .1 ) ;
QuantileNormal ( 4 ; 6 ; .7 ) ;
QuantileNormal ( 8 ; 9 ; .4 ) ;
QuantileNormal ( "" ; "" ; .999 )
)
  Sample output:
-.0488010254160816
.4368968689108328
7.1464030762482447
5.7198760717778018
2.9860384446470287

  Function definition: (Copy & paste into FileMaker's Edit Custom Function window)

Returns the value from the specified normal distribution such that other values sampled from the same distribution fall below that value with p probability. This is sometimes known as the probit function in other programming environments.

This function is dependent on the ErrorFunctionInverse custom function.

 

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Note: these functions are not guaranteed or supported by BrianDunning.com. Please contact the individual developer with any questions or problems.

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