Getting Started

A • STATISTICAL DISTRIBUTIONS
Weibull(, ): WEIBULL(Beta, Alpha) or WEIB(Beta, Alpha)
Probability
Density
Function
f(x) =
a – a x a 1
– e x
0 otherwise
– a
for x
Parameters
Shape parameter () and scale parameter ) specified as positive real values.
Range [0, + )
Mean
-- 1
a ā - , where is the complete gamma function (see gamma distribution).
Variance
2
---- 2 2
a ā - 1
-- 1
a ā - 2 –
167