# NormProb ( x )

Returns the Gaussian Probability Integral

Average rating: 4.2 (37 votes) Log in to vote

Dr. Ronald W. Satz Transpower Corporation http://www.transpowercorp.com |

Sample input:

NormProb ( 2 )

Sample output:

.977249867045

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

This custom function returns the Gaussian (Normal) probability integral (area under the Bell curve) to the left of x (including the area to the left of the y axis). This is the left-tail of the probability distribution. To get the right-tail (which is 1 - NormProb (x)), call the function with the argument -x.

## Comments

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