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Probabilities.WeibullPDF Method (double, double, double)
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Weibull probability density function (PDF).

Syntax
C#
Visual Basic
public static double WeibullPDF(double x, double a, double b);
Parameters
Parameters 
Description 
double x 
Function domain, zero or real positive value. 
double a 
Distribution scale parameter, real positive value. 
double b 
Distribution shape parameter, real positive value. 
Returns

the Weibull probability density function for value x using the parameters a and b. Parameters a and b must be positive numbers, otherwise the result is NAN.

Remarks

Calculates the Weibull probability density function, defined by the following equation: 

 

where I is the interval on which the inverse Weibull CDF is not zero. The Weibull distribution has been found to be useful in a variety of physical applications. It arises in the study of reliability. Reliability studies are concentrated with accessing whether or not a system functions adequately under the conditions for which it was designed.

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