Deck 16: Computer Simulation With Crystal Ball

ملء الشاشة (f)
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سؤال
The negative binomial distribution describes the number of trials until an event occurs n times.
استخدم زر المسافة أو
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لقلب البطاقة.
سؤال
The custom distribution in Crystal Ball allows only discrete distributions to be entered.
سؤال
A forecast cell refers to a random input cell.
سؤال
The distribution used for the assumption cells is one of the options to be set in the Run Preferences for Crystal Ball.
سؤال
The three- and four-parameter distributions provide the most flexibility when trying to fit a curve to a situation.
سؤال
The sensitivity chart in Crystal Ball indicates the increase in the forecast cell value per unit increase in the assumption cell.
سؤال
The binomial distribution describes the number of times an event occurs in a fixed number of trials.
سؤال
The exponential distribution is widely used to describe the time between random events.
سؤال
The triangular distribution has a fixed upper and lower bound.
سؤال
Crystal Ball can be used to fit a discrete distribution to data.
سؤال
The Weibull and beta distribution are examples of two-parameter distributions.
سؤال
The normal distribution is a good choice when all values within a range are equally likely.
سؤال
The geometric distribution describes the number of times an event occurs in a fixed number of trials.
سؤال
A danger of using the lognormal distribution is that values can fall below zero.
سؤال
Increasing the number of trials increases the accuracy of a simulation.
سؤال
The mean standard error gives an indication of the accuracy of the estimated mean.
سؤال
A danger of using the normal distribution is that values can fall below zero.
سؤال
The number of trials is one of the options to be set in the Run Preferences for Crystal Ball.
سؤال
The normal distribution has a fixed upper and lower bound.
سؤال
The sensitivity chart in Crystal Ball indicates how strongly various assumption cells influence the forecast cell.
سؤال
Which of the following charts shows a histogram giving the relative frequency of the various output values in the forecast cell?

A)Frequency chart.
B)Statistics table.
C)Percentiles table.
D)Cumulative chart.
E)Reverse cumulative chart.
سؤال
The Decision Table tool in Crystal Ball can be used to systematically investigate a set of values for a decision variable in a simulation model.
سؤال
A trend chart shows the trend in profit values from trial to trial.
سؤال
OptQuest can not handle constraints in a simulation model.
Multiple Choice Questions
سؤال
OptQuest is guaranteed to find the optimal solution to a simulation problem.
سؤال
Which of the following provide the mean,median,standard deviation,range,etc.for the forecast cell in Crystal Ball.

A)Frequency chart.
B)Statistics table.
C)Percentiles table.
D)Cumulative chart.
E)Reverse cumulative chart.
سؤال
When applying simulation to an inventory problem,which of the following is the most appropriate choice for the forecast cell.

A)The total profit.
B)The holding cost per unit.
C)The demand.
D)All of the above.
E)None of the above.
سؤال
The more trials that are run,the lower the mean standard error will become.
سؤال
Which chart indicates the trend in forecast values as a particular decision variable is varied?

A)Frequency chart.
B)Trend chart.
C)Cumulative chart.
D)Reverse cumulative chart.
E)None of the above.
سؤال
Crystal Ball can be used to fit a continuous distribution to data.
سؤال
Which of the following is a random input cell in Crystal Ball?

A)An assumption cell.
B)A decision variable.
C)A forecast cell.
D)An output cell.
E)None of the above.
سؤال
The Solver Table can be used by Crystal Ball to systematically investigate a set of values for a decision variable in a simulation model.
سؤال
Which of the following is not a characteristic of the normal distribution?

A)Some value is the most likely.
B)Values closest to the mean are more likely.
C)It must be symmetric.
D)Values cannot fall below zero.
E)Extreme values are possible,but rare.
سؤال
Which of the following is not a step required to perform a simulation with Crystal Ball?

A)Define the random input cells.
B)Define the output cells to forecast.
C)Set the run preferences.
D)Develop the spreadsheet model.
E)All are steps required to perform a simulation with Crystal Ball.
سؤال
A distribution is chosen from the Distribution Gallery for which type of cell?

A)An assumption cell.
B)A decision variable.
C)A forecast cell.
D)An output cell.
E)None of the above.
سؤال
The cell that represents the output of a computer simulation is referred to as:

A)an assumption cell.
B)a decision variable.
C)a forecast cell.
D)a data cell.
E)None of the above.
سؤال
Which of the following are advantages of computer simulation over analytical methods like PERT/CPM for predicting the probability that a project will complete by a deadline?

A)It does not need to make as many simplifying assumptions.
B)It is more flexible about which probability distributions can be used.
C)It provides a solution more quickly.
D)All of the above.
E)a and b only.
سؤال
The sensitivity chart conveys which of the following?

A)The relative frequency of various forecast cell values.
B)The increase in profit per unit increase in an assumption cell.
C)It indicates how strongly various assumption cells influence the forecast cell.
D)The mean profit.
E)None of the above.
سؤال
When applying simulation to an inventory problem,which of the following would be an assumption cell?

A)The total profit.
B)The holding cost per unit.
C)The demand.
D)All of the above.
E)None of the above.
سؤال
Which of the following is not one of the charts or tables provided by Crystal Ball?

A)Frequency chart.
B)Statistics table.
C)Reverse frequency chart.
D)Cumulative chart.
E)Percentiles table.
سؤال
Which of the following distributions is widely used to describe the time between random events?

A)Uniform distribution.
B)Exponential distribution.
C)Poisson distribution.
D)Normal distribution.
E)None of the above.
سؤال
Which of the following is not a characteristic of the uniform distribution?

A)It has a fixed minimum value.
B)It has a fixed maximum value.
C)Some value is the most likely.
D)All of the above are characteristic of the uniform distribution.
E)None of the above are characteristic of the uniform distribution.
سؤال
Which of the following distributions describes the number of times an event occurs during a given period of time or space?

A)Uniform distribution.
B)Exponential distribution.
C)Poisson distribution.
D)Normal distribution.
E)None of the above.
سؤال
The custom distribution can be used for which of the following types of random values?

A)Sets of discrete values.
B)A range of discrete values.
C)A continuous distribution.
D)Combinations of a,b,and c.
E)All of the above.
سؤال
Which of the following are three-parameter distributions?

A)Weibull distribution.
B)Normal distribution.
C)Beta distribution.
D)All of the above.
E)a and c only.
سؤال
Which of the following is not a characteristic of the lognormal distribution?

A)Some value is the most likely.
B)It is negatively skewed (above the mean more likely).
C)Values cannot fall below zero.
D)Extreme values (high end only)are possible,but rare.
E)All of the above are characteristic of the lognormal distribution.
سؤال
Which of the following distributions describes the number of trials until an event occurs?

A)Binomial distribution.
B)Geometric distribution.
C)Negative binomial distribution.
D)Poisson distribution.
E)None of the above.
سؤال
Which of the following distributions describes the number of times an event occurs in a fixed number of trials?

A)Binomial distribution.
B)Geometric distribution.
C)Negative binomial distribution.
D)Poisson distribution.
E)None of the above.
سؤال
The Decision Table tool can simultaneously vary up to how many different decision variables?

A)1
B)2
C)3
D)4
E)Any number of decision variables.
سؤال
OptQuest can be used to simultaneously optimize up to how many decision variables?

A)1
B)2
C)3
D)4
E)Many decision variables can be optimized simultaneously.
سؤال
Which of the following is not a characteristic of the triangular distribution?

A)Some value is the most likely.
B)Values close to the most likely value are more common.
C)The most likely value is the mean.
D)It can be asymmetric.
E)It has a fixed upper and lower bound.
سؤال
Which of the following distributions describes the number of trials until an event occurs n times?

A)Binomial distribution.
B)Geometric distribution.
C)Negative binomial distribution.
D)Poisson distribution.
E)None of the above.
سؤال
Which of the following is not a good choice for run preferences when using OptQuest?

A)500 trials.
B)Using a different sequence of random numbers.
C)Latin Hypercube sampling method.
D)Update forecast windows and check precision control every 50 trials.
E)All are good choices when using OptQuest.
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ملء الشاشة (f)
exit full mode
Deck 16: Computer Simulation With Crystal Ball
1
The negative binomial distribution describes the number of trials until an event occurs n times.
True
2
The custom distribution in Crystal Ball allows only discrete distributions to be entered.
False
3
A forecast cell refers to a random input cell.
False
4
The distribution used for the assumption cells is one of the options to be set in the Run Preferences for Crystal Ball.
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5
The three- and four-parameter distributions provide the most flexibility when trying to fit a curve to a situation.
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6
The sensitivity chart in Crystal Ball indicates the increase in the forecast cell value per unit increase in the assumption cell.
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7
The binomial distribution describes the number of times an event occurs in a fixed number of trials.
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8
The exponential distribution is widely used to describe the time between random events.
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9
The triangular distribution has a fixed upper and lower bound.
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10
Crystal Ball can be used to fit a discrete distribution to data.
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11
The Weibull and beta distribution are examples of two-parameter distributions.
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12
The normal distribution is a good choice when all values within a range are equally likely.
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13
The geometric distribution describes the number of times an event occurs in a fixed number of trials.
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14
A danger of using the lognormal distribution is that values can fall below zero.
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15
Increasing the number of trials increases the accuracy of a simulation.
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16
The mean standard error gives an indication of the accuracy of the estimated mean.
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17
A danger of using the normal distribution is that values can fall below zero.
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18
The number of trials is one of the options to be set in the Run Preferences for Crystal Ball.
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19
The normal distribution has a fixed upper and lower bound.
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20
The sensitivity chart in Crystal Ball indicates how strongly various assumption cells influence the forecast cell.
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21
Which of the following charts shows a histogram giving the relative frequency of the various output values in the forecast cell?

A)Frequency chart.
B)Statistics table.
C)Percentiles table.
D)Cumulative chart.
E)Reverse cumulative chart.
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22
The Decision Table tool in Crystal Ball can be used to systematically investigate a set of values for a decision variable in a simulation model.
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افتح القفل للوصول البطاقات البالغ عددها 53 في هذه المجموعة.
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23
A trend chart shows the trend in profit values from trial to trial.
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24
OptQuest can not handle constraints in a simulation model.
Multiple Choice Questions
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25
OptQuest is guaranteed to find the optimal solution to a simulation problem.
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فتح الحزمة
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26
Which of the following provide the mean,median,standard deviation,range,etc.for the forecast cell in Crystal Ball.

A)Frequency chart.
B)Statistics table.
C)Percentiles table.
D)Cumulative chart.
E)Reverse cumulative chart.
فتح الحزمة
افتح القفل للوصول البطاقات البالغ عددها 53 في هذه المجموعة.
فتح الحزمة
k this deck
27
When applying simulation to an inventory problem,which of the following is the most appropriate choice for the forecast cell.

A)The total profit.
B)The holding cost per unit.
C)The demand.
D)All of the above.
E)None of the above.
فتح الحزمة
افتح القفل للوصول البطاقات البالغ عددها 53 في هذه المجموعة.
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28
The more trials that are run,the lower the mean standard error will become.
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افتح القفل للوصول البطاقات البالغ عددها 53 في هذه المجموعة.
فتح الحزمة
k this deck
29
Which chart indicates the trend in forecast values as a particular decision variable is varied?

A)Frequency chart.
B)Trend chart.
C)Cumulative chart.
D)Reverse cumulative chart.
E)None of the above.
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افتح القفل للوصول البطاقات البالغ عددها 53 في هذه المجموعة.
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30
Crystal Ball can be used to fit a continuous distribution to data.
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31
Which of the following is a random input cell in Crystal Ball?

A)An assumption cell.
B)A decision variable.
C)A forecast cell.
D)An output cell.
E)None of the above.
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32
The Solver Table can be used by Crystal Ball to systematically investigate a set of values for a decision variable in a simulation model.
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33
Which of the following is not a characteristic of the normal distribution?

A)Some value is the most likely.
B)Values closest to the mean are more likely.
C)It must be symmetric.
D)Values cannot fall below zero.
E)Extreme values are possible,but rare.
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34
Which of the following is not a step required to perform a simulation with Crystal Ball?

A)Define the random input cells.
B)Define the output cells to forecast.
C)Set the run preferences.
D)Develop the spreadsheet model.
E)All are steps required to perform a simulation with Crystal Ball.
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35
A distribution is chosen from the Distribution Gallery for which type of cell?

A)An assumption cell.
B)A decision variable.
C)A forecast cell.
D)An output cell.
E)None of the above.
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36
The cell that represents the output of a computer simulation is referred to as:

A)an assumption cell.
B)a decision variable.
C)a forecast cell.
D)a data cell.
E)None of the above.
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37
Which of the following are advantages of computer simulation over analytical methods like PERT/CPM for predicting the probability that a project will complete by a deadline?

A)It does not need to make as many simplifying assumptions.
B)It is more flexible about which probability distributions can be used.
C)It provides a solution more quickly.
D)All of the above.
E)a and b only.
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فتح الحزمة
k this deck
38
The sensitivity chart conveys which of the following?

A)The relative frequency of various forecast cell values.
B)The increase in profit per unit increase in an assumption cell.
C)It indicates how strongly various assumption cells influence the forecast cell.
D)The mean profit.
E)None of the above.
فتح الحزمة
افتح القفل للوصول البطاقات البالغ عددها 53 في هذه المجموعة.
فتح الحزمة
k this deck
39
When applying simulation to an inventory problem,which of the following would be an assumption cell?

A)The total profit.
B)The holding cost per unit.
C)The demand.
D)All of the above.
E)None of the above.
فتح الحزمة
افتح القفل للوصول البطاقات البالغ عددها 53 في هذه المجموعة.
فتح الحزمة
k this deck
40
Which of the following is not one of the charts or tables provided by Crystal Ball?

A)Frequency chart.
B)Statistics table.
C)Reverse frequency chart.
D)Cumulative chart.
E)Percentiles table.
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افتح القفل للوصول البطاقات البالغ عددها 53 في هذه المجموعة.
فتح الحزمة
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41
Which of the following distributions is widely used to describe the time between random events?

A)Uniform distribution.
B)Exponential distribution.
C)Poisson distribution.
D)Normal distribution.
E)None of the above.
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افتح القفل للوصول البطاقات البالغ عددها 53 في هذه المجموعة.
فتح الحزمة
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42
Which of the following is not a characteristic of the uniform distribution?

A)It has a fixed minimum value.
B)It has a fixed maximum value.
C)Some value is the most likely.
D)All of the above are characteristic of the uniform distribution.
E)None of the above are characteristic of the uniform distribution.
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افتح القفل للوصول البطاقات البالغ عددها 53 في هذه المجموعة.
فتح الحزمة
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43
Which of the following distributions describes the number of times an event occurs during a given period of time or space?

A)Uniform distribution.
B)Exponential distribution.
C)Poisson distribution.
D)Normal distribution.
E)None of the above.
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افتح القفل للوصول البطاقات البالغ عددها 53 في هذه المجموعة.
فتح الحزمة
k this deck
44
The custom distribution can be used for which of the following types of random values?

A)Sets of discrete values.
B)A range of discrete values.
C)A continuous distribution.
D)Combinations of a,b,and c.
E)All of the above.
فتح الحزمة
افتح القفل للوصول البطاقات البالغ عددها 53 في هذه المجموعة.
فتح الحزمة
k this deck
45
Which of the following are three-parameter distributions?

A)Weibull distribution.
B)Normal distribution.
C)Beta distribution.
D)All of the above.
E)a and c only.
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46
Which of the following is not a characteristic of the lognormal distribution?

A)Some value is the most likely.
B)It is negatively skewed (above the mean more likely).
C)Values cannot fall below zero.
D)Extreme values (high end only)are possible,but rare.
E)All of the above are characteristic of the lognormal distribution.
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افتح القفل للوصول البطاقات البالغ عددها 53 في هذه المجموعة.
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k this deck
47
Which of the following distributions describes the number of trials until an event occurs?

A)Binomial distribution.
B)Geometric distribution.
C)Negative binomial distribution.
D)Poisson distribution.
E)None of the above.
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افتح القفل للوصول البطاقات البالغ عددها 53 في هذه المجموعة.
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48
Which of the following distributions describes the number of times an event occurs in a fixed number of trials?

A)Binomial distribution.
B)Geometric distribution.
C)Negative binomial distribution.
D)Poisson distribution.
E)None of the above.
فتح الحزمة
افتح القفل للوصول البطاقات البالغ عددها 53 في هذه المجموعة.
فتح الحزمة
k this deck
49
The Decision Table tool can simultaneously vary up to how many different decision variables?

A)1
B)2
C)3
D)4
E)Any number of decision variables.
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افتح القفل للوصول البطاقات البالغ عددها 53 في هذه المجموعة.
فتح الحزمة
k this deck
50
OptQuest can be used to simultaneously optimize up to how many decision variables?

A)1
B)2
C)3
D)4
E)Many decision variables can be optimized simultaneously.
فتح الحزمة
افتح القفل للوصول البطاقات البالغ عددها 53 في هذه المجموعة.
فتح الحزمة
k this deck
51
Which of the following is not a characteristic of the triangular distribution?

A)Some value is the most likely.
B)Values close to the most likely value are more common.
C)The most likely value is the mean.
D)It can be asymmetric.
E)It has a fixed upper and lower bound.
فتح الحزمة
افتح القفل للوصول البطاقات البالغ عددها 53 في هذه المجموعة.
فتح الحزمة
k this deck
52
Which of the following distributions describes the number of trials until an event occurs n times?

A)Binomial distribution.
B)Geometric distribution.
C)Negative binomial distribution.
D)Poisson distribution.
E)None of the above.
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53
Which of the following is not a good choice for run preferences when using OptQuest?

A)500 trials.
B)Using a different sequence of random numbers.
C)Latin Hypercube sampling method.
D)Update forecast windows and check precision control every 50 trials.
E)All are good choices when using OptQuest.
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فتح الحزمة
افتح القفل للوصول البطاقات البالغ عددها 53 في هذه المجموعة.