Rockwell Automation Arena Users Guide - Manual (Page 134)

A RENA U SER ’ S G UIDE
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Uniform(a, b)UNIFORM(Min, Max) or UNIF(Min, Max)
The minimum (a) and maximum (b) values for the distribution specified as real numbers
with a < b.
[a, b]
(a + b)/2
(b – a) 2 /12
The uniform distribution is used when all values over a finite range are considered to be
equally likely. It is sometimes used when no information other than the range is available.
The uniform distribution has a larger variance than other distributions that are used when
information is lacking (e.g., the triangular distribution).
Probability
Density
Function
f(x)
0
a
1
b-a
b
x
f(x) =
0 otherwise
for a ≤ x ≤ b
1
b a –
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Parameters
Range
Mean
Variance
Applications