Related Topics
Take Another Quiz

Operations Final Exam Prep

88 Questions
Database Quizzes & Trivia
Questions and Answers
  • 1. 
    A bottling process sometimes results in overfills or underfills. Overfills are especially damaging to the equipment. Which process capability index would this company most want to monitor?
    • A. 

      Cp

    • B. 

      Cpl

    • C. 

      Cpu

    • D. 

      Cpk

  • 2. 
    • A. 

      The month in which demand is 250

    • B. 

      The month in which demand is 400

    • C. 

      the month in which demand is 200

    • D. 

      The month in which demand is 350

  • 3. 
    A manufacturer of printed circuit boards produces boards. To monitor the number of boards that do not pass a functional test, a(n) ____ is used.
    • A. 

      X-bar chart

    • B. 

      P-chart

    • C. 

      C-chart

    • D. 

      R-chart

  • 4. 
    A moving average model works best when ____ in the time series.
    • A. 

      Only irregular variation is present

    • B. 

      Only a trend is present

    • C. 

      There is no trend, seasonal, or cyclical pattern

    • D. 

      Trend, seasonal, and cyclical patterns all exist

  • 5. 
    A tool to help determine how a process works and what it is supposed to do is a
    • A. 

      Run chart

    • B. 

      Cause-and-effect diagram

    • C. 

      Scatter diagram

    • D. 

      Flow chart

  • 6. 
    A tool to help focus on the most significant problem is:
    • A. 

      Flowchart

    • B. 

      Pareto analysis

    • C. 

      Cause-and-effect diagram

    • D. 

      Scatter diagram

  • 7. 
    A withdrawal Kanban
    • A. 

      Authorizes production

    • B. 

      Authorizes suppliers to produce

    • C. 

      Authorizes the transfer of an empty container

    • D. 

      Autorizes shipping to customers

  • 8. 
    A(n) ____ is a statement of how many finished items are to be produced and when they are to be produced
    • A. 

      Aggregate Plan

    • B. 

      Master Production Schedule

    • C. 

      Material Requirements Plan

    • D. 

      Capacity Requirements Plan

  • 9. 
    • A. 

      Dividing the year into 13 periods of four weeks each

    • B. 

      All types of candy are converted into a poundage figure for purposes of aggregate planning

    • C. 

      The amount of inventory investment is a top priority and they must be kept low

    • D. 

      The policy of the firm is to allow the workforce to vary, that is, a chase strategy

  • 10. 
    • A. 

      Throughput

    • B. 

      Non-Bottleneck work activity

    • C. 

      Non-physical constraint

    • D. 

      Utilization

  • 11. 
    According to the Toyota Motor Company, waiting time is a necessary evil in production and is not classified as waste.
    • A. 

      True

    • B. 

      False

  • 12. 
    • A. 

      Overproduction

    • B. 

      Transportation

    • C. 

      Motion

    • D. 

      Single-piece flow

  • 13. 
    All of the following are important concepts in forecasting except
    • A. 

      Determining the planning horizon length.

    • B. 

      Determining the time bucket size (i.e., year, quarter, month, week, day, etc.).

    • C. 

      Using a smoothing constant of 0.1 in Delphi methods of forecasting

    • D. 

      . Identifying cyclical patterns.

  • 14. 
    All of the following are important in choosing a forecasting method except
    • A. 

      Smoothing constant (alpha)

    • B. 

      Time span for which forecast is made

    • C. 

      Data requirements

    • D. 

      Quantitative skills needed

  • 15. 
    An inventory item can be
    • A. 

      Only a parent

    • B. 

      Only a component

    • C. 

      Both a parent and a component

    • D. 

      Neither a parent or a component

  • 16. 
    An R-square of 0.80 means
    • A. 

      80% of the variability in the independent variable is explained by the dependent variable

    • B. 

      80% of the variability in the dependent variable is explained by the independent variable

    • C. 

      80% of the variability in the dependent variable is not explained by the independent variable

    • D. 

      Multiple regression was used

  • 17. 
    Assigning people to tasks, setting priorities for jobs and scheduling equipment fits best with which level of the generic framework for resource planning?
    • A. 

      Aggregate planning - Level 1

    • B. 

      Disaggregation - Level 2

    • C. 

      Execution - Level 3

    • D. 

      Capacity requirements planning

  • 18. 
    C-charts
    • A. 

      Are used for the fraction of non-conforming items

    • B. 

      Count the number of non-conformances (defects) per unit

    • C. 

      Use continuous metrics

    • D. 

      Can have negative lower control limits

  • 19. 
    Chapter 10 describes how a clogged court system tried to solve the bottleneck problem regarding the processing of tens of thousands of foreclosures by
    • A. 

      Hiring extra retired judges to process foreclosures.

    • B. 

      Shifting civil and criminal court work to slack periods so foreclosures could be processed

    • C. 

      Increase the price of court filing fees to influence demand

    • D. 

      Apply the Theory of Constraints to this court system

  • 20. 
    Common cause variation is
    • A. 

      Controllable at the sources

    • B. 

      Called assignable cause

    • C. 

      Can be reduced by statistical process control methods

    • D. 

      Inherent (i.e., present) in every process

  • 21. 
    Exponential smoothing...
    • A. 

      Works best for long-term forecasting

    • B. 

      Yields a mathematically optimal solution

    • C. 

      Assigns weights to past data that decay exponentially as the data gets older

    • D. 

      Cannot be adapted to handle trend

  • 22. 
    For a non-bottleneck activity
    • A. 

      Utilization must be near 100%

    • B. 

      An hour lost has no effect on total process or factory output.

    • C. 

      Use large order sizes to minimize setups

    • D. 

      Work-in-process buffer inventory should be placed in front of non-bottlenecks

  • 23. 
    For single exponential smoothing
    • A. 

      Large values of alpha place more emphasis on recent data

    • B. 

      Small values of alpha place more emphasis on recent data

    • C. 

      Very volatile time series with substantial random variability should use a large value for alpha

    • D. 

      Very stable time series with little random variability should use small values for alpha

  • 24. 
    Ford Motor Company has decided to switch to a pull system of manufacturing and distribution for its vehicles. Which one of the following is most likely to occur?
    • A. 

      Inventory levels will increase.

    • B. 

      Component parts and subassemblies will be replenished only when needed

    • C. 

      Dealer parking lot space will need to be increased

    • D. 

      Finished goods inventory will decrease, but raw materials and work-in-process inventories will increase.

  • 25. 
    Historically, the average proportion of defective bars has been 0.015. Samples will be of 100 bars each. Calculate the UCL and LCL for a p-chart using z = 3. Suppose a sample had 0.044 defectives. What would you do?
    • A. 

      Nothing

    • B. 

      Look for assignable causes

    • C. 

      Delete the sample with 0.044 defects and take another sample tha tis better

    • D. 

      None of these choices

  • 26. 
    Honda wants to monitor the number of blemishes (scratches, blisters, etc.) on the fenders of its cars using a statistical process control chart. The most appropriate type of SPC chart is
    • A. 

      X-bar chart

    • B. 

      R-chart

    • C. 

      Cpk chart

    • D. 

      C-chart

  • 27. 
    If actual demand for a product is highly influenced by only random variation, the quantitative technique to use for forecasting demand is
    • A. 

      Regression

    • B. 

      Moving average

    • C. 

      Mean Absolute Percentage Error (MAPE)

    • D. 

      Delphi

  • 28. 
    If forecast demand exceeds the total factory or supply capacity, managers might simply decide not to meet forecast demand. This decision would most likely be made at which planning level?
    • A. 

      Aggregate planning - Level 1

    • B. 

      Disaggregation - Level 2

    • C. 

      Execution - Level 3

    • D. 

      Capacity requirements planning

  • 29. 
    If no special causes affect the output of a process, we say that the process is ____; when special causes are present, the process is said to be ____.
    • A. 

      Out of control; in control

    • B. 

      In control, out of control

    • C. 

      Capable; not capable

    • D. 

      Not capable, capable

  • 30. 
    If single exponential smoothing is used and the time series has a negative trend, the forecast
    • A. 

      Lag

    • B. 

      Overshoot

    • C. 

      Be on target

    • D. 

      Have a MAD equal to zero

  • 31. 
    In lean thinking, waste need not be classified as simply material waste such as scrap and defective parts.
    • A. 

      True

    • B. 

      False

  • 32. 
    In the 5Ss, items identified as unnecessary and thus removed from a workplace would be included with which S?
    • A. 

      Sort

    • B. 

      Synchronize

    • C. 

      Size

    • D. 

      Standardize

  • 33. 
    In the SERVQUAL instrument for measuring service quality, the concept of assurance is associated with
    • A. 

      The ability to convey trust and confidence

    • B. 

      Caring and individual attention

    • C. 

      Always providing consistent service

    • D. 

      Performing a service quickly and on time

  • 34. 
    Long lead-times and higher work-in-process is most closely related to which of Toyota's "Seven Major Waste Categories"?
    • A. 

      Overproduction

    • B. 

      Single-piece flow

    • C. 

      Waiting time

    • D. 

      Transportation

  • 35. 
    Machine down time and downgrading costs are examples of which type of quality cost?
     
    • A. 

      Prevention

    • B. 

      Appraisal

    • C. 

      Internal failure

    • D. 

      External failure

  • 36. 
    P-charts
    • A. 

      Are used for the fraction of non-conforming (defective) items

    • B. 

      Count the number of non-conformances (defects) per unit

    • C. 

      Use continuous metrics

    • D. 

      Can have negative lower limits

  • 37. 
    Principles of lean operating systems include all of the following except
     
    • A. 

      Eliminate waste

    • B. 

      Reduce workforce

    • C. 

      Increase speed and response

    • D. 

      Reduce cost

  • 38. 
    Promotion of weekly discount airfares by an airline would be an example of ____.
    • A. 

      Demand Management

    • B. 

      Production rate changes

    • C. 

      Inventory changes

    • D. 

      Facility, equipment, and transportation changes

  • 39. 
    Quality at the source means that quality is controlled by
    • A. 

      People responsible for their work

    • B. 

      Quality control managers

    • C. 

      Front line supervisors

    • D. 

      Top management

  • 40. 
    Quality at the source requires
    • A. 

      Starting with a plan

    • B. 

      Having reliable suppliers

    • C. 

      Doing it right the first time

    • D. 

      Having a good design

  • 41. 
    Quick setup or changeover of tooling and fixtures is associated with ____.
    • A. 

      Visual controls

    • B. 

      Single minute exchange of dies

    • C. 

      5Ss

    • D. 

      Six Sigma

  • 42. 
    Regression analysis
    • A. 

      Is limited to one dependent and one independent variable

    • B. 

      Is best with non-linear relationships

    • C. 

      Maximizes the sum of the squared deviations between the actual time series value and the estimated values of the dependent variable

    • D. 

      Can be used with time as the independent variable

  • 43. 
    Regular patterns in a data series that take place over long periods of time are called ____.
    • A. 

      Trends

    • B. 

      Seasonal Patterns

    • C. 

      Cyclical Patterns

    • D. 

      Irregular Patterns

  • 44. 
    Repeatable periods of ups and downs over short periods of time are called ____.
    • A. 

      Trends

    • B. 

      Seasonal patterns

    • C. 

      Cyclical patterns

    • D. 

      Irregular patterns

  • 45. 
    Setting order sizes and schedules for individual subassemblies and resources by week or day fits best with which level of the generic framework for resource planning?
    • A. 

      Aggregate planning - Level 1

    • B. 

      Disaggregation - Level 2

    • C. 

      Execution - Level 3

    • D. 

      Capacity requirements planning

  • 46. 
    Testing whether a computer boots up the first time is an example of
    • A. 

      Supplier certification and management

    • B. 

      In-process control

    • C. 

      Finished goods control

    • D. 

      Statistical process control

  • 47. 
    The forecasting error measurement that is different in that the measurement scale factor is eliminated is
    • A. 

      MSE

    • B. 

      MAD

    • C. 

      RMSE

    • D. 

      MAPE

  • 48. 
    The inputs required for material requirements planning are defined by the _____.
    • A. 

      Master Production Schedule

    • B. 

      MRP explosion

    • C. 

      Bill of material

    • D. 

      MRP Record

  • 49. 
    The Lot-for-Lot (LFL) Rule
    • A. 

      Minimizes purchase or setup costs

    • B. 

      Is best used for low inventory carrying costs and high purchase order costs

    • C. 

      Is best applied when inventory carrying costs are high and setup/order costs are low

    • D. 

      Masks the true nature of dependent demand

  • 50. 
    The number of Kanban cards is dependent on all of the following except
    • A. 

      Average daily demand rate

    • B. 

      Setup time

    • C. 

      Part waiting time

    • D. 

      Safety stock

  • 51. 
    The purpose of aggregate planning is to
    • A. 

      Minimize the work force size

    • B. 

      Maximize the production rate

    • C. 

      Minimize the cost of meeting demand

    • D. 

      Optimize the inventory level

  • 52. 
    The recognized benchmark for Six Sigma implementation is General Electric (GE). GE's Six Sigma problem solving approach employs five phases. Which is not one of the phases?
    • A. 

      Define

    • B. 

      Measure

    • C. 

      Analyize

    • D. 

      Improvise

  • 53. 
    The words "product family", "budget allocation" and "long-term" fit best with which level of the generic framework for resource planning?
    • A. 

      Agreggate planning - Level 1

    • B. 

      Disaggregation - Level 2

    • C. 

      Execution - Level 3

    • D. 

      Capacity requirements planning

  • 54. 
    Toyota classified waste into seven major categories. Those categories include all of the following except
    • A. 

      Motion

    • B. 

      Ordering

    • C. 

      Inventory

    • D. 

      Waiting

  • 55. 
    Using Table 16.2, for the R-chart, what is the value of the Lower Control Limit?
    • A. 

      Less than or equal to 0.01

    • B. 

      B. greater than 0.01 but less than or equal to 0.02

    • C. 

      Greater than 0.02 but less than or equal to 0.03

    • D. 

      Greater than 0.03 but less than or equal to 0.04

  • 56. 
    Using Table 16.2, the sample values represent service times in minutes. For the R-chart, what is the value of the Upper Control Limit?
    • A. 

      Less than or equal to 0.90

    • B. 

      Greater than 0.90 but less than or equal to 0.94

    • C. 

      Greater than 0.94 but less than or equal to 0.99

    • D. 

      Greater than 1.99

  • 57. 
    Which aggregare planning strategy generally would result in the least amount of inventory?
    • A. 

      Level production

    • B. 

      Chase Demand

    • C. 

      Mixed

    • D. 

      Lot-for-Lot (LFL)

  • 58. 
    Which is not related to a discrete metric?
    • A. 

      Counting

    • B. 

      Visual inspection

    • C. 

      Good or bad

    • D. 

      Weight

  • 59. 
    Which is not true regarding periodic order quantity (POQ)?
    • A. 

      Might be selected judgmentally

    • B. 

      Using the EOQ, it might be determined an economic time interval

    • C. 

      Easy to implement

    • D. 

      Longer POQs reduce inventory levels and costs

  • 60. 
    Which is not true regarding simple exponential smoothing?
    • A. 

      Small values of alpha place more emphasis on past data

    • B. 

      Larger values of alpha have the advantage of quickly adjusting the forecast

    • C. 

      If alpha equals zero, the forecast will never change

    • D. 

      If alpha equals one, the forecast will never change

  • 61. 
    Which is the most comprehensive solution for a firm if a load report shows not enough capacity is available
    • A. 

      Find more capacity

    • B. 

      Change the master production schedule

    • C. 

      Change both the master production schedule and add capacity

    • D. 

      Rerun MRP

  • 62. 
    Which lot sizing rule is best when inventory carrying costs are high and setup/order costs are low?
    • A. 

      Lot for Lot (LFL)

    • B. 

      Fixed order quantity (FOQ)

    • C. 

      Periodic order quantity (POQ)

    • D. 

      All rules provide the same result

  • 63. 
    Which lot sizing rule might use the EOQ calculation?
    • A. 

      Lot-for-Lot (LFL)

    • B. 

      Fixed order quantity (FOQ)

    • C. 

      Periodic order quantity (POQ)

    • D. 

      All rules provide the same result

  • 64. 
    Which lot sizing rule minimizes costs associated with ordering and setup?
    • A. 

      Lot-for-Lot (LFL)

    • B. 

      Fixed order quantity (FOQ)

    • C. 

      Periodic order quantity (POQ)

    • D. 

      All rules provide the same result

  • 65. 
    Which of the following "lean" ideas is false?
    • A. 

      Activities not adding value are a waste.

    • B. 

      Accidents are a form of waste.

    • C. 

      A pull system produces waste.

    • D. 

      Overproduction is a form of waste

  • 66. 
    Which of the following does not belong in Philip Crosby's philosophy of quality?
    • A. 

      Quality means conformance to requirements not elegance

    • B. 

      The only performance standard is Six Sigma

    • C. 

      There is no such thing as a quality problem

    • D. 

      The only performance measurement is the cost of quality, which is the expense of non-conformance

  • 67. 
    Which of the following does not fit with the Delphi method?
    • A. 

      Group of experts

    • B. 

      Brought together as a group

    • C. 

      Process iterates until a consensus is reached

    • D. 

      Qualitative as well as numerical outputs

  • 68. 
    Which of the following emphasizes defects per million opportunities as a key measure of quality?
    • A. 

      The 14 Points

    • B. 

      ISO 9000:2000

    • C. 

      The Gap model

    • D. 

      Six Sigma

  • 69. 
    Which of the following is <u>not</u> a primary output from a time-phased MRP report?
    • A. 

      The capacity requirements plan

    • B. 

      Information on obtaining raw materials and purchased parts

    • C. 

      Detailed schedules for manufacturing the product and controlling manufacturing inventories

    • D. 

      Information that drives cash flow, budgets and financial needs

  • 70. 
    Which of the following is least related to a pull system?
    • A. 

      Building inventory

    • B. 

      Final assembly schedule

    • C. 

      Real time information

    • D. 

      Sales rate

  • 71. 
    Which of the following is least related to a push system?
    • A. 

      Maximum customer responsiveness

    • B. 

      Predefined schedule

    • C. 

      Finished goods inventory

    • D. 

      Based on forecast

  • 72. 
    Which of the following is most closely related to Statistical Process Control (SPC)?
    • A. 

      Removing common causes of variation

    • B. 

      Removing special (or assignable) causes of variation

    • C. 

      Removing all causes of variation

    • D. 

      Computing process capability

  • 73. 
    Which of the following is not a basic principle of a lean operating system?
    • A. 

      Elimination of waste

    • B. 

      Batching

    • C. 

      Increased speed and response

    • D. 

      Improved quality

  • 74. 
    Which of the following is NOT a characteristic or best practice of JIT?
    • A. 

      Small repetitive order/lot sizes

    • B. 

      Keep it simple and use visual controls

    • C. 

      Slow processing times

    • D. 

      Clearly defined performance metrics

  • 75. 
    Which of the following is not a statistical method?
    • A. 

      Delphi

    • B. 

      Exponential Smoothing

    • C. 

      Moving agerage

    • D. 

      Linear Regression

  • 76. 
    Which of the following is not an aggregate planning decision option?
    • A. 

      Building a new plant

    • B. 

      Promotion and advertising

    • C. 

      Subcontraction

    • D. 

      Layoffs

  • 77. 
    Which of the following is not correct regarding aggregate planning?
    • A. 

      Large number of alternatives

    • B. 

      Good solutions by trial-and-error method

    • C. 

      Seasonal fluctuations in demand can be handled

    • D. 

      Costs are sunk and irrelevant

  • 78. 
    Which of the following is not one of the 5Ss?
    • A. 

      Synchronize

    • B. 

      Standardize

    • C. 

      Shine

    • D. 

      Sustain

  • 79. 
    Which of the following is not one of the five characteristics of a time series?
    • A. 

      Time bucket

    • B. 

      Trend

    • C. 

      Cyclical

    • D. 

      Random variation

  • 80. 
    Which of the following is NOT one of the ten principles of forecasting published by a group of international experts?
    • A. 

      Use quantitative rather than qualitative methods.

    • B. 

      Never ask experts to justify their forecasts in writing.

    • C. 

      Use multiple measures of forecast accuracy

    • D. 

      Combine forecasts from approaches that differ

  • 81. 
    Which of the following is not one of W. Edwards Deming's 14 points?
    • A. 

      Create a vision and demonstrate commitment

    • B. 

      Stop making decisions purely on the basis of cost

    • C. 

      Eliminate exhortation

    • D. 

      The only performance standard is Zero Defects

  • 82. 
    Which of the following is not related to a continuous metric?
    • A. 

      Measured as the degree of conformance to a specification

    • B. 

      X-bar and R charts

    • C. 

      P-charts

    • D. 

      Weight

  • 83. 
    Which one of the following statements is true concerning Lean Six Sigma?
    • A. 

      Lean principles focus on advanced statistical methods.

    • B. 

      Lean principles have been developed over a sixty year plus period of time.

    • C. 

      Lean principles include the 5Ss framework and practices.

    • D. 

      Six Sigma and lean principles are not relatedthey are separate bodies of knowledge

  • 84. 
    Which one of the following statements is true?
    • A. 

      The heijunka system is a system of boxes much like in a mailroom set of boxes attached to a wall used to smooth production outputs.

    • B. 

      Producing goods early is a principle of lean

    • C. 

      A university publication printed with 100% post-consumer recycled fiber is an example of total productive maintenance practice.

    • D. 

      Preventive maintenance is not a part of lean principles and practices

  • 85. 
    ___ is/are the total demand for an item derived from all of its parents.
    • A. 

      An explosion

    • B. 

      Gross requirements

    • C. 

      Scheduled receipts

    • D. 

      Lot sizing

  • 86. 
    ____ forecasts are needed for planning production schedules and to assign workers to jobs.
    • A. 

      Long-range

    • B. 

      Short-range

    • C. 

      Intermediate-range

    • D. 

      Demand planning

  • 87. 
    ____ forecasts are needed to plan for facility expansion.
    • A. 

      Long-range

    • B. 

      Short-range

    • C. 

      Intermediate-range

    • D. 

      Demand planning

  • 88. 
     -------- forecasts are needed to plan work-force levels, allocate budgets among divisions and schedule jobs and resources.
    • A. 

      Long-range

    • B. 

      Intermediate-range

    • C. 

      Short-range

    • D. 

      Demand planning

Related Topics