Dew MtxVec NET
NormalCDFInv Routines
Summary
Normal distribution point percent function (PPF).

Unit
Probabilities

Declaration
Procedure NormalCDFInv(P: TDenseMtxVec; mu, sigma: TSample; Res: TDenseMtxVec);

Description
Calculates the inverse normal CDF for probability vector P using the parameters Mu and Sigma. The results are stored in vector Res. The Res Length and Complex properties are adjusted automatically. If vector X is complex, an exception is raised.
Declaration
Function NormalCDFInv(p, mu, sigma: TSample): TSample;
Result
the normal distribution point percent function (PPF) for probability p using the parameters mu (mean value) and sigma (standard deviation). Probability p must lie on the interval [0,1] and sigma must be positive value, otherwise the result is NAN. The inverse normal cumulative distribution function is defined by the following equation:

where m is mean value and s is standard deviation.
The result of NormalCDFInv is the solution of the integral equation above with the parameters mu and sigma where you supply the probability p.
Categories
Continuous probabilities
 See Also 
NormalPDF 
NormalCDF 

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