Rayleigh Distribution

In probability theory and statistics, the Rayleigh distribution is a continuous probability distribution. It usually arises when a two-dimensional vector (e.g. wind velocity) has its two orthogonal components normally and independently distributed. The absolute value (e.g. wind speed) will then have a Rayleigh distribution. The distribution may also arise in the case of random complex numbers whose real and imaginary components are normally and independently distributed. The absolute value of these numbers will then be Rayleigh-distributed.
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A mathematical statement, usually applied to frequency distributions of random variables, for the case in which two orthogonal variables are independent and normally distributed with unit variance. (188 )

<mathematics> A curve that yields a good approximation to the actual labour curves on software projects.
[Details? Equation?]
(1996-05-29)

The Rayleigh distribution has the probability density function:

0 x <
b > 0
where
b is the scale parameter
e is the base of the natural logarithm, sometimes called Euler's e (2.71...)
See also, Process Analysis .
Rayleigh distribution (animation) 
The graphic above shows the changing shape of the Rayleigh distribution when the scale parameter equals 1, 2, and 3.

B: (Matematika) sebaran Rayleigh
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