NormProb ( x )
Returns the Gaussian Probability Integral
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Dr. Ronald W. Satz - Show more from this author
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.
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