Getting Started

GETTING STARTED WITH ARENA
Discrete: DISCRETE(CumP 1 , Val 1 , . . ., CumP n , Val n ) (c 1 , x 1 , . . ., c n , x n )
Probability
Mass
Function
p(x j ) = c j – c j-1
where c 0 = 0
Cumulative
Distribution
Function
Parameters
The DISCRETE function in Arena returns a sample from a user-defined discrete
probability distribution. The distribution is defined by the set of n possible discrete
values (denoted by x 1 , x 2 , . . . , x n ) that can be returned by the function and the
cumulative probabilities (denoted by c 1 , c 2 , . . . , c n ) associated with these discrete
values. The cumulative probability (c j ) for x j is defined as the probability of obtaining
a value that is less than or equal to x j . Hence, c j is equal to the sum of p(x k ) for k going
from 1 to j. By definition,
c n = 1.
Range {x 1 , x 2 , . . ., x n }
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