Deck 12: Computer simulation: Basic Concepts

Question 1

A stochastic system is one that evolved over time according to a continuous probability distribution

Answer 1

False

Question 2

When dealing with relatively complex systems,computer simulation is an inexpensive option for decision makers

Answer 2

False

Question 3

Simulation is often the first choice of decision makers instead of analytic models

Answer 3

False

Question 4

Analytical methods are preferable to simulation if an appropriate analytic method is available

Question 5

Simulation is basically an optimizing technique

Question 6

Computer simulation is a useful tool because it generates accurate information using very small samples

Question 7

When using a random number table,it is important to always start at the same point of the table so that results may be replicated

Question 8

Simulation is especially useful for situations too complex to be analyzed using analytical models

Question 9

Computers can simulate years of operation in seconds

Question 10

One purpose of running experiments on a simulation model is to answer "what-if" questions

Question 11

Simulation models are fairly easy to use and understand;therefore they can be used for a wide range of decisions

Question 12

A simulation model is validated if it adequately depicts real system performance

Question 13

Random numbers can be generated in Excel by using the VLOOKUP function

Question 14

Random observations can be generated in Excel by using the VLOOKUP function

Question 15

A simulation model includes a description of the components of the system that is to be simulated

Question 16

Computer simulation is only applicable to situations that have elements that can be described by random variables

Question 17

A number is a random number between 0 and 1 if it is generated in such a way that every possible number within this interval has an equal chance of occurring

Question 18

Simulation enables a decision maker to experiment with a system and observe its behavior

Question 19

Managers can use simulation to obtain optimal answers for a wide range of problems

Question 20

A simulation clock keeps track of how long the simulation has run in real time

Question 21

A simulation model is often formulated in terms of a flow diagram

Question 22

The main procedure for advancing the time on the simulation clock is called next-event time advance

Question 23

Animation can be used to display computer simulations in action

Question 24

Simulation will often give measures of performance as outputs

Question 25

It is always necessary to test the validity of a simulation model by comparing its results with those of an analytic study

Question 26

Given this frequency distribution,the random number 0 2258 would be interpreted as a demand of:

A)0
B)1
C)2
D)3
E)1 or 2

Question 27

In order to generate more accurate results when using simulation:

A)use a continuous distribution instead of a discreet distribution
B)increase the number of replications
C)increase the number of factors considered
D)All of the above
E)None of the above

Question 28

Which of the following is not a reason for simulation's popularity?

A)It is simple to use and/or understand
B)Extensive software packages are available
C)Many situations are too complex for mathematical solutions
D)If can be used for a wide range of applications
E)It is typically an inexpensive approach

Question 29

Which of the following would not be a probable reason for choosing simulation as a decision-making tool?

A)The situation is too complex for a mathematical model
B)The is a limited time in which to obtain results
C)Good results have been obtained in the past using simulation
D)Users are able to understand the model
E)All of these are probable reasons for choosing simulation

Question 30

A larger confidence interval is desirable for a measure of performance since it shows that the results are valid over a larger range

Question 31

If a simulation begins with the first random number,the third simulated value would be:

A)0
B)1
C)2
D)3
E)4

Question 32

A Data Table can be used to "trick" Excel to perform many replications of a computer simulation

Question 33

The main reason that a large number of replications of a simulation would be made is:

A)computers are usually used,and they can easily handle a large number of replications
B)it is part of the scientific approach
C)it is a form of sampling,and large samples give more accurate results than small samples
D)it is more likely to provide optimal answers
E)None of the above

Question 34

One key advantage of computer simulation is that is makes full use of the simplifying approximations that are available

Question 35

A manager is simulating the number of times a machine operator stops a machine to make adjustments After careful study the manager found that the number of stops ranged from one to five per cycle and that each number of stops was equally likely Using the random numbers 0 1835 and 0 3094 (in that order),the next two simulated cycles would respectively have stops for adjustment of:

A)2 and 2
B)1 and 2
C)2 and 1
D)1 and 1
E)2 and 3

Question 36

A parameter analysis report is used to generate many replications of a computer simulation

Question 37

If a simulation begins with the first random number,the second simulated value would be:

A)0
B)1
C)2
D)3
E)4

Question 38

A flow diagram shows the output of a simulation run

Question 39

If a simulation begins with the first random number,the first simulated value would be:

A)0
B)1
C)2
D)3
E)4

Question 40

With the speed of computers,it is not necessary to limit the amount of factors considered in a simulation

Question 41

Which of the following would not be considered a main advantage of simulation?

A)It permits experimentation with the system
B)It generates an optimal solution
C)It compresses time
D)It can serve as a training tool
E)All of the above are advantages

Question 42

How many times is David late for work because his car won't start?

A)0
B)1
C)2
D)3
E)4

Question 43

Which of the following can be used for computer simulation?

A)Spreadsheets
B)Programming languages
C)Simulation languages
D)Simulators
E)All of the above

Question 44

How many times is David late for work?

A)0
B)1
C)2
D)3
E)4