PsiNormal Distribution

PsiNormal (μ,σ,...)

PsiNormal (µ,σ) is an unbounded, symmetric distribution with the familiar bell curve, also called a Gaussian distribution.  The Normal distribution is widely used in many different kinds of applications.  A normal distribution with mean zero and standard deviation one is called a Standard normal distribution.

The sum of independent random variables of any shape tends to the Normal distribution.

Alternate Formulation:  PsiNormalAlt

PsiNormalAlt is the PsiNormal distribution defined through alternative arguments.  Two parameters are required and must be used in the following combinations:  2 different percentiles, percenitile and mean or percentile and standard deviation.