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Probabilities.WeibullCDFInv Function
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Weibull distribution point percent function (PPF).

Pascal
function WeibullCDFInv(p: double; a: double; b: double): double; overload;
File
Parameters
Parameters 
Description 
p 
Probability, real positive value on closed interval [0,1]. 
a 
Distribution scale parameter, real positive value. 
b 
Distribution shape parameter, real positive value. 
Returns

the Weibull distribution point percent function (PPF) for probability p using the parameters a and b. Probability p must lie on the interval [0,1] and parameters a and b must be positive numbers, otherwise the result is NAN.

Description

function WeibullCDF(x: single; a,b :single): single; overload;  

The inverse Weibull cumulative distribution function is defined by the following equation: 

 

where I is the interval on which the inverse Weibull CDF is not zero.

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