Rockwell-automation Arena Basic Edition Users Guide Uživatelský manuál stáhnout pdf (Strana 68)

ARENA BASIC EDITION USER’S GUIDE

• • • • •

ContinuousCONTINUOUS(CumP

, Val

, . . ., CumP

, Val

)

, x

,. . ., c

)

The CONTINUOUS function in Arena returns a sample from a user-defined distribution.

Pairs of cumulative probabilities c

(= CumP

) and associated values x

(= Val

) are speci-

fied. The sample returned will be a real number between x

and x

, and will be less than or

equal to each x

with corresponding cumulative probability c

. The x

’s must increase with

j. The c

’s must all be between 0 and 1, must increase with j, and c

must be 1.

The cumulative distribution function F(x) is piecewise linear with “corners” defined by

F(x

) = c

for j = 1, 2, . . ., n. Thus, for j > 2, the returned value will be in the interval

Probability

Density

Function

Cumulative

Distribution

Function

f(x) =

if x = x

(a mass of probability c

at x

)

– c

j-1

if x

j-1

≤ x < x

, for j = 2, 3, . . ., n

0if x < x

or x ≥ x

Parameters

1 2 ... 63 64 65 66 67 68 69 70 71 72 73 ... 89 90

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