The Certified Quality Engineer Problem Bank 4

ASQ CQE(Certified Quality Engineer)

CQE Sample Test #4

1. Inspection operations typically A. Help in assuring satisfactory quality. B. Reduce the usability of the product or service involved. C. Require precise equipment in most instances. D. Occur between all manufacturing operations.

2. A process calls for the mean value of a dimension to be 2.02". Which of the following should be used as the null hypothesis to test whether or not the process is achieving this mean ? A. The mean of the population is 2.02" B. The mean of the sample is 2.02" C. The mean of the population is not 2.02" D. The mean of the sample is not 2.02"

3. When evaluation data for goodness of fit to suspected distributions, which of the following statements are true ?

Ⅰ. Most distributions have the same degrees of freedom. Ⅱ. The χ test can be used for hypothesis testing. Ⅲ. In all cases, the data is divided into cells. 2

A. I and

Ⅱ only.

B. I and

Ⅲ only.

4. The equation below represents the

1 f ( x)= exp x 2π

C.

[ ( -

1 2

Ⅱ and Ⅲ only.

ln x-μ σ

D.

Ⅰ,Ⅱ and Ⅲ.

)] 2

A. Lognormal probability density function.

B. Normal probability density function.

C. Exponential probability density function.

D. None of the above.

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Sample Test #4

5. If Events A and B are independent, then

Ⅰ. P(B/A)=P(A) Ⅱ. P(A/B)=P(B) Ⅲ. P(B/A)=P(B) A.

Ⅰ only

B.

Ⅱ only

C.

Ⅲ only

D.

Ⅰ and Ⅱ only

6. If we drew a large number of samples from a controlled process, we would not be surprised to discover

Ⅰ. Some differences among the values of the sample means Ⅱ. A distribution of sample means around some central value Ⅲ. That many sample means differ from the process average A.

Ⅰ only

B.

Ⅱ only

C.

Ⅰ and Ⅲ only

D.

Ⅰ,Ⅱ and Ⅲ

7. The recently introduced quality term "kaizen" refers to which of the following ? A. The application of reengineering to process improvement. B. Small, gradual but continual improvement steps. C. The natural spread of SPC applications to administrative areas. D. The numerous Japanese adaptations of the work of W. Edwards Deming.

8. The follow-up on the need for corrective action, identified in an audit report, is MOST clearly the responsibility of which of the following ? A. The client's upper management.

B. The auditee's upper management.

C. The lead auditor.

D. The operating area in which finding was made.

9. When items are removed from service or testing without failure, they are said to be A. Censored.

B. Missing.

C. Invalid.

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D. Inconsistent.


10. No one likes complaints, but they are good for us. Why ? A. There is no good in it.

B. A second chance to improve.

C. They did the inspection for us.

D. Ignore the complaint.

11. Which of the following will BEST assure quality in most organizations ? A. Have competent people with quality attitudes. B. Automate the process where possible. C. Use only high quality suppliers. D. Hire an energetic quality assurance manager.

12. The advantages of an effective quality cost measurement system EXCLUDE which of the following ?

Ⅰ. An alignment of company and quality goals. Ⅱ. The solving of many quality problems. Ⅲ. The elimination of most management corrective actions. Ⅳ. An effective vehicle for resource allocation. A.

Ⅱ and Ⅲ only

B.

Ⅰ and Ⅱ only

C.

Ⅰ,Ⅱ and Ⅳ only

13. Which of the following statements can be safely made about Pareto diagrams ? A. They have little application outside of the quality area. B. They reflect an observation of fact. C. They are bound by a universal set of laws. D. They have no validity for discrete data.

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D.

Ⅰ and Ⅳ only

Sample Test #4

14. Which of the following quality improvement tools utilize the accumulation of ideas or data into categories ?

Ⅰ. Control charts. Ⅱ. Plan/do/check/act. Ⅲ. Pareto diagrams. Ⅳ. Fishbone diagrams. Ⅴ. Flow charts. A.

Ⅱ and Ⅲ only

B.

Ⅰ and Ⅳ only

C.

Ⅲ and Ⅳ only

D.

Ⅰ,Ⅱ,Ⅳ and Ⅴonly

15. During the problem definition phase of continuous improvement, which of the following tools would be considered particularly effective ?

Ⅰ. PDCA. Ⅱ. Pareto diagrams. Ⅲ. Fishbone diagrams. Ⅳ. Process capability. A.

Ⅰ and Ⅳ only

B.

Ⅰ,Ⅱ and Ⅲ only

C.

Ⅱ and Ⅲ only

D.

Ⅰ,Ⅱ,Ⅲ and Ⅳ

16. Quality control has been labeled as the science and art of identifying and controlling variability. One measure of variability as used in this context is A. The arithmetic mean.

B. The variance.

C. The mode.

D. The geometric mean.

17. When comparing an assessment audit with an appraisal audit, one would conclude that A. The appraisal audit measures system effectiveness. B. The appraisal audit is generally an internal audit. C. The assessment audit is usually external. D. The assessment audit is larger in scope.

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18. ISO/TS 16949(2002) requirements for corrective and preventive action include which of the following ?

Ⅰ. Corrective action procedures to investigate and eliminate the cause of the nonconformity. Ⅱ. The use of a disciplined problem solving methodology to address the resolution of any nonconformance. Ⅲ. The use of mistake proofing methodology as part of their corrective and preventive action. A.

Ⅰ only

B.

Ⅰ and Ⅱ only

C.

Ⅰ and Ⅲ only

D.

Ⅰ,Ⅱ and Ⅲ

19. As a problem solving technique, which of the following would be the BEST application for an lshikawa diagram ? A. Problem identification and corrective action. B. To support the Plan, Do, Check, Act cycle. C. Determination of potential root problem causes. D. Determination of short-term corrective action.

20. The sequence for the Deming Improvement cycle is A. Design, manufacture, inspect, ship. B. Plan, document, implement, audit. C. Plan, do, study, act. D. Vision, creation, evaluation, optimization.

21. What is a checksheet that is used to collectlocational data commonly called ? A. A measles chart.

B. A recording checksheet.

C. A location checksheet.

D. A position chart.

22. The difference between setting alpha equal to 0.05 and alpha equal to 0.01 in hypothesis testing is

Ⅰ error. B. With alpha equal to 0.05, one is more willing to risk a typeⅡ error. A. With alpha equal to 0.05, one is more willing to risk a type

C. Alpha equal to 0.05 is a more "conservative" test of the null hypothesis(Ho). D. With alpha equal to 0.05, one is less willing to risk a type

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Ⅰ error.

Sample Test #4

23. A random variable

Ⅰ. May be either discrete or continuous. Ⅱ. Is called "random" because it depends on the normal distribution. Ⅲ. Is called "variable" because it refers to the variance. A.

Ⅰ only

B.

Ⅱ only

C.

Ⅰ and Ⅲ only

D.

Ⅱ and Ⅲ only

24. Which of the following are good sources of information on customer satisfaction ?

Ⅰ. Internal customers. Ⅱ. Suppliers. Ⅲ. Upper management. Ⅳ. Customers. A.

Ⅰ only

B.


C.


D.

Ⅰ,Ⅱ,Ⅲ and Ⅳ

25. Which of the modern quality management tools could use 3"×5" cards or post-it-notes as part of the brainstorming or idea generation stage ?

Ⅰ. Tree diagrams. Ⅱ. Affinity diagrams. Ⅲ. Matrix diagrams. Ⅳ. Interrelationship diagrams. Ⅴ. Activity network diagrams. A.

Ⅰ,Ⅱ and Ⅴ only

B.

Ⅰ,Ⅲ and Ⅳ only

C.

Ⅱ,Ⅳ and Ⅴ only

26. Records of old blank audit checklists are handy for A. Recording comments that wouldn't fit on the audit checklist. B. Reference when compiling a new checklist. C. The auditee to preview potential audit areas. D. Including in a company's quality manual.

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D.

Ⅰ,Ⅱ,Ⅳ and Ⅴ only


27. There are numerous approaches to problem solving. Arrange the following steps into the most logical sequence from start to finish. 1. Analyze the problem. 2. Confirm the results. 3. Define the problem. 4. Identify the problem. 5. Investigate the problem. 6. Solve the problem. A. 3, 4, 1, 5, 2, 6

B. 1, 4, 3, 5, 2, 6

C. 4, 3, 1, 5, 6, 2

D. 4, 3, 5, 1, 6, 2

28. The quality tool widely used to analyze the relationship between two variables is A. Scatter diagram.

B. Pareto diagram.

C. Run charts.

D. Cause and effect diagram.

29. Rivets from several different forging presses are dumped into a large central total bin. Once each hour an inspector goes to the bin and selects five rivets at random and plots an X bar - R chart. Which of the following statements would one suspect to be true of the resulting X bar - R chart ?

Ⅰ. The R bar on the chart will be relatively high. Ⅱ. There are very few special or assignable causes noted on the X bar chart. Ⅲ. Only subtle shifts in the over all process average will be observed. Ⅳ. The average chart will become a better indicator of process performance than range chart. A.

Ⅳ only

B.

Ⅰ and Ⅱ only

C.


D.

Ⅰ,Ⅱ,Ⅲ and Ⅳ

30. The word of material control is laden with three letter acronyms. Arrange the following acronyms in proper time sequence (from first to last) as they would occur in the case of a nonconformity.

Ⅰ. MRR Ⅱ. MRB Ⅲ. CAR Ⅳ. CAB A.

Ⅰ, Ⅱ, Ⅲ, Ⅳ

B.

Ⅰ, Ⅳ, Ⅲ, Ⅱ

C.

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Ⅱ, Ⅲ, Ⅰ, Ⅳ

D.

Ⅱ, Ⅰ, Ⅲ, Ⅳ

Sample Test #4

31. In order to obtain the most verifiable objective evidence during an audit, which of the following auditor requests is the best approach ? A. How often do you receive or transmit product information ? B. To what extent is product information important to your job duties ? C. Please show me examples of product information and describe how they affect your job duties. D. Is product information important in the performance of your quality related job duties ?

32. Which of the following statements is NOT correct in regards to regression analysis ? A. The coefficient of determination ranges from 0 to 1 B. The correlation coefficient ranges from -1 to 1 C. The higher the coefficient of determination, the better the fit. D. Least squares is required to determine the best fit straight line.

33. The BEST reason for instituting a quality cost system is A. To satisfy ISO 9001 system requirements. B. To achieve a proper balance of prevention, appraisal and failure costs. C. To identity opportunities for improvement. D. To benchmark your competitors.

34. A negative report about a potential supplier can result from which one of the following ?

Ⅰ. Poor past performance. Ⅱ. No quality control plan. Ⅲ. Lack of suitable equipment. Ⅳ. No evidence of equipment calibration. A.

Ⅰ and Ⅳ only

B.


C.

Ⅱ,Ⅲ and Ⅳ only

D.

Ⅰ,Ⅱ,Ⅲ and Ⅳ

35. Duplicate readings, using two separate instruments, were obtained on ten samples. What is the tabular value of the statistic used to determine the significance of the mean difference at the 0.05 level of probability ? A. 2.26

B. 2.23

C. 2.11

D. 2.09

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36. Which two of the following would be positive steps for an organization intent on continuous improvement?

Ⅰ. Determining the total organizational impact of changes. Ⅱ. Decreasing skill based training expenditure. Ⅲ. Discontinuing detailed record keeping of improvement projects. Ⅳ. Calculating the costs of proposed improvement projects. A.

Ⅰ and Ⅱ only

B.

Ⅱ and Ⅲ only

C.

Ⅰ and Ⅳ only

D.

37. Normally, complaint data for both a product or service organization should provide A. An indication of the organizational areas creating the most problems. B. The degree or extent of customers dissatisfaction. C. The appropriate corrective action to take. D. The total quality costs for the organization.

38. Given the incomplete ANOVA table below, compute the F statistic.

A. 0.87

B. 3.22

C. 1.62

D. 1.14

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Ⅲ and Ⅳ only

Sample Test #4

39. The figure below is referred to as

A. An acceptance curve.

B. A percent defective curve.

C. A conformance curve.

D. An OC curve.

40. Which of the following CANNOT be a null hypothesis ? A. The population means are equal.

B. P'=0.5.

C. The sample means are equal.

D. The difference in the population means is 3.85.

41. Of the seven major MBNQA critique areas, which of the following receive the heaviest weighting ? A. Business results.

B. Human resource management.

C. Strategic planning.

D. Process management.

42. Which of the following would NOT be a true statement regarding the use of pneumatic gages ?

Ⅰ. A high level of skill is required for use. Ⅱ. The equipment is both fast and accurate. Ⅲ. The equipment is versatile and can make a variety of measurements. Ⅳ. Only variable measurements can be made. A.

Ⅱ, Ⅳ only

B.

Ⅲ only

C.

Ⅰ and Ⅳ only

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D.



43. What is the principal function of the quality department ? A. A service department for all other departments.

B. To coordinate the quality effort.

C. Inspection and process control.

D. Organizational focus.

44. Which of the following is the BEST method to developing materials for a training program on the gaps in performance ? A. Secure a workshop trainer.

B. Review a record of activities.

C. Set up a one shot case study.

D. Allocate employees for training.

45. A lot of 50 pieces contains 5 defectives. A sample of two is drawn without replacement. The probability that both will be defective is approximately A. 0.0100.

B. 0.0010.

C. 0.0082.

D. 0.0093.

46. All of the following are a possible cause for corrective action EXCEPT A. A customer complaint.

B. An internal quality audit.

C. A competitive pricing structure.

D. A management review.

47. Which of the following individuals or groups is (are) NOT involved in a preliminary review of nonconforming incoming purchased material ? A. Members of MRB.

B. Quality assurance supervisor.

C. Purchasing department representative.

D. Inspection personnel.

48. Which of the following would NOT be considered a valid microwave testing application ? A. Measurement of the moisture content of a variety of materials. B. Monitoring of the chemical composition of certain liquids. C. Defect detection in metallic parts with relatively simple shapes. D. Thickness gaging of numerous non-metallic materials.

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Sample Test #4

49. Which of the following is a preventive action ? A. Expanding or rewriting a procedure after it has been found to be ineffective. B. Correcting tolerances after they were found to be wrong. C. Retraining workers on how to do a task after mistakes were found. D. Writing an inspection procedure for a new product.

50. Which of te following items would be LEAST likely to be included in a company's quality manual ? A. A nonconforming product element. B. The results of customer surveys - good or bad. C. An internal quality audit policy. D. A description of statistical techniques employed.

51. The term collinear refers to A. Two linear variables.

B. A linear interaction.

C. Variables being a linear combination of one another.

D. Linear correlation.

52. A particular structure is to be used in a critical application. Based on the expected load profile, the structure is required to have a mean strength of 10,000 psi. To ensure reliability against fracture, rupture, or collapse, the structure was designed with a mean strength of 15,000 psi. Based on the design information, the margin of safety is A. 0.67.

B. 0.50.

C. 0.33.

D. 1.50.

53. In product liability, the proper legal term(s) for statements regarding the reliability of a product are known as A. Advertisements.

B. Warranties.

C. Contracts or obligations.

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D. Representations.


54. Which of the seven new quality management tools can be useful in organizing facts about an unfamiliar subject ?

Ⅰ. The affinity diagram. Ⅱ. The process decision program chart(PDPC). Ⅲ. The matrix diagram. Ⅳ. The prioritization matrix. A.

Ⅰ only

B.

Ⅰ and Ⅱ only

C.


D.

Ⅰ,Ⅱ,Ⅲ and Ⅳ

55. Given that resistors are produced in lots 1000, and that the average number of defective resistors per lot is 12.7, what are the upper and lower limits for the control chart appropriate for this process ? A. LCL=2.0 UCL=23.4

B. LCL=3.8 UCL=20.2

C. LCL=0.031 UCL=0.131

D. LCL=1.5 UCL=26.7

56. The major purposes of an internal quality audit program includes which of the following ?

Ⅰ. Help prevent unfit products from being manufactured. Ⅱ. Determine if established procedures are being followed. Ⅲ. Provide objective feedback to management. Ⅳ. Identity problems needing attention. A.

Ⅱ and Ⅲ only

B.


C.


D.

Ⅰ,Ⅱ,Ⅲ and Ⅳ

57. Which of the following would be considered essential elements of a total improvement plan ?

Ⅰ. Providing the necessary training and education for company employees. Ⅱ. Providing bonuses for major departmental heads based upon their performance. Ⅲ. Encouraging a culture transformation within the organization. Ⅳ. Providing a regular quality cost report to major departments. A.

Ⅰ and Ⅱ only

B.

Ⅱ,Ⅲ

and

Ⅳ only

C.

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Ⅰ and Ⅲ only

D.

Ⅰ,Ⅱ and Ⅲ and Ⅳ

Sample Test #4

58. The diameter of a population of ball bearings is normally distributed with a mean of 75 and a standard deviation of 8. What is probability of the average diameter of 10 randomly selected ball bearings being greater that 77 ? A. 0.3751

B. 0.4013

C. 0.2146

D. 0.0210

59. A good quality information system should

Ⅰ. Allow top management to easily view important information. Ⅱ. Collect as much data as possible electronically rather than manually. Ⅲ. Be accessible to all members of the organization. A.

Ⅰ and Ⅱ only

B.

Ⅰ and Ⅲ only

C.

Ⅱ and Ⅲ only

D.

Ⅰ,Ⅱ and Ⅲ

60. The ideal results of a quality training effort would NOT include which of the following ? A. Increased cost-of-quality results.

B. Improved working methods and morale.

C. Increased productivity and job satisfaction.

D. Reduced defects and employee turnover.

61. A system was designed with 3 capacitors. When the system is first activated all capacitors are operating. The system continues to operated as long as at least 1 capacitor is operating. This is an example of A. Redundancy.

B. A series system.

C. An active parallel system

D. A standby parallel system.

62. Which of the following is the MOST reliable source of audit evidence ? A. Physical observation of activities by at least two independent sources. B. Physical examination of documentation and observation of corresponding activities. C. A combination of written and oral responses from auditee personnel to checklist questions. D. Examination of the key documents that are identified in the standard or contract being audited.

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63. Which of the following is the underlying subgrouping scheme for control charting ? A. Selected to include a heterogeneous cross section of product produced. B. Selected to coincide with customer orders and invoices. C. Selected to consist of products produced in tight time sequence. D. Selected to match final inspection lots.

64. What is the lower control limit for proportion defective if the average daily production is 5000 units and the average fraction defective is 0.02 ? A. 0.016

B. 0.014

C. 0

D. 0.010

65. The distinguishing feature of the optical comparator is that adjustments for measurement are observed on A. A dial indicator.

B. A reticle coordinator.

C. A screen.

D. A rotating stage.

66. Which of the following quality tools would be LEAST important in the problem definition phase ? A. Fishbone diagrams.

B. Control charts.

C. Process flow diagrams.

D. Pareto diagrams.

67. Given a coefficient of determination of 0.85, which of the following is TRUE ?

Ⅰ. There is positive correlation in the data. Ⅱ. 85% of the variability is explained by the regression model. Ⅲ. The sum of squares of X is greater than the sum of squares of Y. A.

Ⅰ only

B.

Ⅱ only

C.

Ⅰ and Ⅲ only

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D.

Ⅱ and Ⅲ only

Sample Test #4

68. The working documents that facilitate the execution of an audit often include which of the following ?

Ⅰ. The credentials of the audit team. Ⅱ. Checklists and reporting forms. Ⅲ. Standard requirements for corrective action. Ⅳ. Quality system procedures and work instructions. A.

Ⅰ and Ⅱonly

B.

Ⅱ and Ⅲ only

C.

Ⅰ and Ⅳ only

D.

Ⅱ and Ⅳ only

69. In a full factorial experimental design, factors A and B are both tested at 4 levels. How many experiments are conducted ? A. 8

B. 9

C. 12

D. 16

70. The cause(s) for declining productivity rates in the United States is (are)

Ⅰ. Management's refusal to invest more in research and development. Ⅱ. Lack of quality in marketed products. Ⅲ. Poor communication channels. A.

Ⅱ only

B.

Ⅰ and Ⅲ only

C.

Ⅱ and Ⅲ only

D.

Ⅰ,Ⅱ and Ⅲ

71. Calculate the standard deviation of the following complete set of data 11, A. 4.3

B. 2.2

7,

12,

10,

C. 1.9

8 D. 5.0

72. What step in the Six Sigma DMAIC problem solving approach is missing from the PDSA and PDCA cycles ? A. C

B. I

C. M

D. D

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73. Recognizing the nature of process variability, the process capability target is usually A. Looser than product specifications.

B. The same as product specifications.

C. Tighter than product specifications.

D. Not related to product specifications.

74. The purpose of an audit interview can be to

Ⅰ. Understand and evaluate the facts. Ⅱ. Attempt the identification of system deficiencies. Ⅲ. Ensure that both auditee and auditor understand the quality requirements. A.

Ⅰ and Ⅱ only

B.

Ⅰ and Ⅲ only

C.

Ⅱ and Ⅲ only

D.

Ⅰ,Ⅱ and Ⅲ

75. The figure below is commonly referred to as a

A. Venn diagram.

B. Pareto chart.

C. OC chart

76. The figure below indicates

A. A strong interaction.

B. No interaction.

C. A weak interaction.

D. A positive interaction.

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D. Space diagram.

Sample Test #4

77. The probability of survival (Ps) for a product is expressed as a decimal fraction or percent which indicates A. The expected number of devices in a quantity of devices that will not be degraded by the specified special tests. B. The expected number of devices in a quantity of devices that would not be found defective by sampling plan inspection. C. The expected number of devices in a quantity of devices that will not fail due to other than cause reasons. D. The expected number of devices in a quantity of devices that will survive for a required period of time.

78. When specifying the "10:1 calibration principle", one is referring to A. The ratio of the frequency of calibration of the secondary standard to that of the primary standard B. The ratio of the frequency of calibration of the instrument to that of the primary standard C. The ratio of the main scale to vernier scale calibration D. The ratio of calibration standard accuracy to calibrated instrument accuracy.

79. Which of the following action steps is most recommended to change a satisfied product customer into a delighted customer? (A delighted customer won't buy anything but your product.) A. Exceed the customer's reliability requirements. B. Have an exceptionally quick warranty claim system. C. Provide an initial cost substantially below your competition. D. Consistently exceed the quoted delivery schedule.

80. When comparing internal and external customers, one finds that

Ⅰ. The requirements of both must be clearly defined. Ⅱ. Feedback is essential in both areas. Ⅲ. An external customer may have more flexibility to seek a different supplier. Ⅳ. There are no significant differences. A.

Ⅰ and Ⅱ only

B.

Ⅱ and Ⅲ only

C.


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D.

Ⅰ,Ⅱ,Ⅲ and Ⅳ


81. If the specification limits are wider than the control limits, then A. The process is capable. B. The process capability index is greater than 1.0. C. The specification limits replace the control limits on the chart. D. None of the above.

82. Please arrange the following quality management techniques in sequential order, from least complex to most complex. The complexity involves both the ease of use and the amount of subject familiarity necessary for effectiveness. 1. Affinity diagram. 2. Tree diagram. 3. Matrix diagram. 4. Prioritization matrix. A. 1, 2, 3, 4

B. 2, 1, 4, 3

C. 3, 1, 2, 4

D. 1, 3, 2, 4

83. How many standard deviation units, symmetrical about the mean, will span an area around the mean of 40% of the total area under the normal curve ? A. ±0.84

B. ±0.52

C. ±1.28

D. ±0.25

84. The existence of a quality control manual at your key supplier means A. That a quality system has been developed.

B. That a quality system has been implemented.

C. That the firm is quality conscious.

D. That the firm is a certified supplier.

85. When using a sine bar to measure an angle, the height of the gage block setting is determined by multiplying the sine of the angle by A. The width of the gage blocks.

B. The height of the gage blocks.

C. The length of the adjacent side.

D. The length of the sine bar.

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Sample Test #4

86. On the production floor, parts being produced measure .995-1.005. The specification requires the parts to be .995-1.005. Which of the following techniques would NOT be particularly useful in trying to improve and control the process ? A. Pre-control

B. Short run charts

C. X-bar And R charts

D. ANSI/ASQ Z1.4

87. The sequential design steps for Taguchi's robust design are

Ⅰ. Concept design. Ⅱ. Parameter design. Ⅲ. Tolerance design. A.

Ⅰ, Ⅱ, Ⅲ

B.

Ⅰ, Ⅲ, Ⅱ

C.

Ⅱ, Ⅰ, Ⅲ

D.

Ⅲ, Ⅰ, Ⅱ

88. The factor D4 in X bar and R control charts is used to A. Determine the upper control limit of a range chart. B. Establish the control limits for the average chart. C. Correct the bias in estimating the population. D. Determine the lower control limit of a range chart.

89. The most frequent error made by top management, when dealing with system variation, is A. Treating common causes as special causes. B. Considering all causes to be local causes. C. Recognizing that common causes require quick action. D. Treating special causes as common causes.

90. Which of the following functions are normally considered work elements of quality control engineering ?

Ⅰ. Preproduction planning. Ⅱ. Process capability studies. Ⅲ. Classification of characteristics. Ⅳ. Quality cost analysis. A.

Ⅰ and Ⅲ only

B.

Ⅱ and Ⅲ only

C.


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D.

Ⅰ,Ⅱ,Ⅲ and Ⅳ


91. Which of the following are likely to be positive actions in obtaining a supplier's commitment to quality improvement ?

Ⅰ. Involving the supplier early in the product development stage. Ⅱ. Partially reimbursing the supplier, when the product is rejected. Ⅲ. Establishing a firm schedule of required product quantities and dates. Ⅳ. Providing meaningful and timely quality performance feedback. A.

Ⅰ and Ⅳ only

B.


C.


D.

Ⅰ,Ⅱ,Ⅲ and Ⅳ

92. Which of the following data types would provide the most useful information in eliminating the causes of paint blemishes on automobiles being produced on an assembly line ? A. Attribute.

B. Ordinal.

C. Locational.

D. Variables.

93. Which of the following distributions is used in situations that have only two possible outcomes ?

Ⅰ. Binomial. Ⅱ. Hypergeometric. Ⅲ. Geometric. A.

Ⅰ and Ⅱ only

B.

Ⅰ and Ⅲ only

C.

Ⅱ and Ⅲ only

D.

Ⅰ,Ⅱ and Ⅲ

94. A box contains 5 red marbles and 2 blue marbles. Given a red marble has been drawn, what is the probability of drawing at least 2 red marbles in the next 3 draws ? A. .07564

B. 0.6864

C. 0.6911

D. 0.8000

95. The coefficients in the equation below can be determined using

y i = a + bx i+ e A. SPC.

B. Least squares regression.

i

C. Sum of squares estimation.

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D. All of the above.

Sample Test #4

96. Precision can BEST be defined as A. The ability to target a process to a specified normal value. B. The average reading determined after repeated measurements by different operators. C. The difference between the average of repeated measurements on the same item. D. The agreement or closeness of measurements on the same item.

97. Calculate the standard deviation of the following set of five sample observations 1.5, A. 0.658

B. 0.508

1.2,

1.1,

C. 0.568

1.0,

0

D. 0.500

98. A process that is normally distributed will have which of the following characteristics ? A. It is predictable.

B. It is bimodal.

C. It is skewed.

D. It is truncated.

99. Which of the following is NOT true in regards to blocking ?

Ⅰ. A block is a dummy factor which doesn't interact with real factors. Ⅱ. A blocking factor has 2 levels. Ⅲ. A block is a subdivision of the experiment. Ⅳ. Blocks are used to compensate when production processes restrict randomization of runs. A.

Ⅰ only

B.

Ⅱ only

C.

Ⅲ only

D.

Ⅱ and Ⅳ only

100. Which of the following is BEST suited for modelling the reliability of a complex piece of equipment ? A. Fault-tree.

B. FMEA.

C. MIL-STD-217.

- 22 -

D. Vector Space Analysis.


101. What is the meaning of the G D & T symbol below ?

A. Maximum material condition.

B. Regardless of feature size.

C. Least material condition.

D. Projected tolerance zone.

102. An audit consisting of an examination, inspection or testing of a product which has been previously inspected is called which of the following ? A. System audit.

B. Internal audit.

C. Process audit.

D. Product audit.

103. What is usual sequence (from top to bottom) for action terms in a continuous improvement driven company ? 1. Tactics. 2. Mission. 3. Strategies. 4. Projects. A. 3, 2, 1, 4

B. 2, 4, 3, 1

C. 2, 3, 4, 1

D. 3, 2, 4, 1

104. The probability of event A occurring and event B occurring is equal to the probability of event A occurring multiplied by the probability of event B occurring if

Ⅰ. Events A and B are mutually exclusive. Ⅱ. Events A and B are independent. Ⅲ. The covariance of events A and B is zero. A.

Ⅰ only

B.

Ⅰ and Ⅲ only

C.

Ⅱ only

- 23 -

D.

Ⅱ and Ⅲ only

Sample Test #4

105. Correlation coefficients are generated from which of the following graphs ? A. Measles charts.

B. Scatter diagrams.

C. Pareto diagrams.

D. Control charts.

106. Which of the following would be the BEST application of a Pareto chart ?

Ⅰ. To determine when to make proactive adjustments to a process. Ⅱ. To differentiate between major and minor problem areas. Ⅲ. To gather data and to design experimental controlled changes. Ⅳ. To evaluate the results of other problem solving techniques upon the product or service. A.

Ⅰ and Ⅱ only

B.

Ⅱ and Ⅲ only

C.

Ⅱ and Ⅳ only

D.

Ⅰ,Ⅱ,Ⅲ and Ⅳ

107. Given a coefficient of determination of 0.9, what is the correlation coefficient ? A. 0.9 or -0.9

B. 0.81 or -0.81

C. 0.9487 or-0.9487

D. 0.9487

108. What type of production process does this histogram in the figure below show ?

A. In control, process capability = 1.

B. Process capability needs to be improved.

C. A distribution after 100% inspection.

D. An in control process with special causes of variation.

- 24 -


109. Communication with vendors on quality problems A. Should be initiated by the vendor's quality control department. B. Should be initiated by the vendee's purchasing department. C. Should be initiated by the vendee's engineering department. D. Can be resolved only through personal visits between vendor and vendee.

110. The first and most important step, in establishing a good product design is A. Determining customer requirements.

B. Determining manufacturing process capabilities.

C. Evaluating vendor quality systems.

D. Ensuring quality participation in design review.

111. A sampling plan that may use up to 4 samples to make a decision to accept or reject is A. Single sampling

B. Double sampling

C. Multiple sampling

D. Quadruple sampling

112. The best definition of the PDSA technique is which of the following ? A. A method of involving teams in the problem solving cycle. B. An organized mind-mapping technique. C. A continuous improvement loop. D. A creative planning analysis method

113. The administration and control of all inspection stamps normally rests with which of the following ? A. The production planning department.

B. The quality department.

C. The material Review Board.

D. The customer requesting the part identification.

114. A graphical display of the total percentage of results below a certain measurement value is called a A. Histogram.

B. Probability density function.

C. Cumulative distribution function.

D. Expected value.

- 25 -

Sample Test #4

115. What type of data contains infinite data points that may be displayed on a continuous measurement scale ? A. Continuous distribution.

B. Statistics.

C. Parameters.

D. Discrete distribution.

116. The equation below is

S xy S xxS

yy

A. The covariance of X and Y. B. The correlation coefficient of x and Y. C. The coefficient of determination of X and Y. D. The variance of the product of X and Y.

117. What is the reliability of the system below ?

A. 0.99.

B. 0.874665.

C. 0.93.

D. 0.999965.

118. Which of the following could be used to accelerate failures in electronic devices ?

Ⅰ. Increased voltage. Ⅱ. Vibration. Ⅲ. Temperature cycling. A.

Ⅰ and Ⅱ only

B.

Ⅰ and Ⅲ only

C.

- 26 -

Ⅱ and Ⅲ only

D.

Ⅰ,Ⅱ and Ⅲ


119. Which of the following are TRUE statements regarding the use of visual inspection ?

Ⅰ. Reference standards can be used. Ⅱ. It provides consistency between inspectors. Ⅲ. It is relatively expensive. Ⅳ. It can be quickly performed. A.

Ⅰ and Ⅳonly

B.

Ⅰ,Ⅱ and Ⅳonly

C.

Ⅱ and Ⅳ only

D.

Ⅰ,Ⅱ,Ⅲ and Ⅳ

120. An X bar control chart is based on a sample size of 4. An operator mistakenly plots the value of a single point on the control chart. This point: A. Will not cause any misjudgements if the process is in control. B. Will always be plotted near the center line of the control chart. C. Will cause the associated R chart to show an out of control condition. D. Increases the probability of the process being labeled out of control.

121. Which of the following quality leaders is associated with the definition of quality as "fitness for use" ? A. Joseph M. Juran.

B. Philip B. Crosby.

C. W. Edwards Deming.

D. Armand V. Feigenbaum.

122. A Latin square design is noted for its straight forward an analysis of interaction effects. This statement is A. True in every case.

B. True sometimes, depending on the size of the square.

C. False in every case.

D. False except for Graeco-Latin squares.

123. Usually three-view orthographic drawings are used to fully dimension objects. Which of the design forms needs only two views to achieve full dimension ? A. Symmetrical.

B. Chamfered.

C. Perpendicular.

- 27 -

D. Cylindrical.

Sample Test #4

124. One use for a student test is to determine whether or not differences exists in A. Variability.

B. Confidence intervals.

C. Correlation coefficients.

D. Averages.

125. The probability of accepting a lot of unacceptable quality is known as A. Alpha risk.

B. 1-beta risk.

C. Producer's risk.

D. Beta risk.

126. Why are Pareto diagrams used ? A. To show the process capability.

B. To prioritize problems.

C. To show the flow of information or material.

D. To facilitate a brainstorming session.

127. When introducing a new product to the manufacturing phase of the product's life, the most important justification for a process capability study-after a pilot run for stability, but during a controlled pre-production operation, is A. It will prove design feasibility. B. It will establish machine capability. C. It will provide manufacturing engineering with the basis for a preventive maintenance schedule. D. It will determine the degree of conformance of the system to meet design specifications and economic yield requirements.

128. Sensitivity in experimentation is A. Getting the true result. B. Extreme care in data analysis. C. Using the best measuring device. D. Ability to distinguish significant differences in the response variable.

- 28 -


129. After constructing a process flow chart, an improvement team can often generate improvement ideas by asking which of the following questions ?

Ⅰ. What are the significant few and the trivial many ? Ⅱ. Are proven components and configurations used ? Ⅲ. Is there any unnecessary complexity ? Ⅳ. Does duplication or redundancy exist ? A.

Ⅰ and Ⅱ only

B.

Ⅲ and Ⅳ only

C.


D.

Ⅰ and Ⅳ only

130. Historical data is used to create a Pareto diagram. The following occurrences were noted for one month Minor corrosion

38

Inclusions

23

Bolts missing

19

Cracking

14

Other

14

From this data one can conclude A. Corrosion costs more than other categories. B. Inclusions cause more defects than cracking. C. The "other" category is insignificant. D. The operator causes more problems than the design.

131. The reliability of a component is 0.8. How many of these components are required in parallel if the system reliability requirement is 0.99 ? A. 2

B. 3

C. 4

D. 5

132. One of the major hazards in the material review board procedure is the tendency of the board to emphasize only the disposition function and to neglect which of the following functions ? A. Statistical analysis.

B. Corrective action.

C. Material evaluation

D. Tolerance review.

- 29 -

Sample Test #4

133. Which of the following is NOT considered to be one of the new quality management tools ? A. Scatter diagrams.

B. PDPC charts.

C. Tree diagrams.

D. Matrix diagrams.

134. Which of the following is NOT true ? A. The range of the correlation coefficient is from -1 to 1. B. The range of the coefficient of determination is from 0 to 1. C. A negative correlation coefficient indicates negative correlation. D. The lower the correlation coefficient the lower the correlation.

135. Using the available angle blocks of 1', 3', 5', 20', 30', 1°, 3°, 5°, 20°, 30°, which of the following statements is correct regarding the angles that can be created ? A. Angles of approximately 1/3 of the possibilities up to 60°. B. Odd value angles below 20° and even values of 20° up to 50°. C. All angles from 1/ to 59° 59' in 1' increments. D. All angles from 0' to 59° 59' in 1' increments.

136. When trying to find all possible causes of a problem, which of the following tools would be useful ?

Ⅰ. Systematic troubleshooting and brainstorming. Ⅱ. Fishbone diagrams and histograms. Ⅲ. Checklists and scatter diagrams. Ⅳ. Control charts and graphs. A.

Ⅰ and Ⅳonly

B.

Ⅰ,Ⅱ and Ⅳonly

C.

Ⅱ,Ⅲ and Ⅳonly

D.

Ⅰ,Ⅱ,Ⅲ and Ⅳ

137. Which of the following statements is NOT true in regards to X bar control charts ? A. The width of the limits are usually set at plus or minus 3 standard deviations of the sampling distribution. B. The width of the limits are inversely proportional to the sample size· C. If the process is in control, 2700 points per million will fall outside the control limits. D. If the process is in control, 1/2 the point will fall below the center line.

- 30 -


138. Which of the following is a valid null hypothesis ? A. p > 1/8 B. mu < 98 C. The mean of population A is not equal to the mean of population B. D. mu = 110.

139. EVOP should be used A. When there is a manufacturing problem. B. When a process is not in statistical control. C. When an experimenter first begins working on a new product. D. When a process is producing satisfactory material.

140. A set of measurements is arranged in order of magnitude with a frequency associated with each measurement. This action describes : A. A grouped frequency distribution. B. A cumulative frequency distribution. C. An ungrouped frequency distribution. D. A histogram.

141. Kaizen is a Japanese approach directed toward A. Mistake proofing an operation. B. Doing things better to achieve an increasingly higher standard. C. Developing employee participation in the business decisions. D. Becoming more competitive in the world market.

142. What association does the expression "house of quality" normally make ? A. Our entire organization is quality minded. B. Full quality functional deployment. C. The organization listens to the voice of the customer. D. Prompt service and product quality.

- 31 -

Sample Test #4

143. Which of the following statements BEST reflects the difference between breakthrough as compared to typical improvement ? A. Researching the competitive and noncompetive intelligence. B. Attempting to surpass the performance of the best benchmarked source. C. Determining the leader in the areas felt to be deficient. D. Identifying all major critical success functions.

144. A transistor is rated for use at 220 volts. Using this transistor in a device that delivers 180 volts is an example of A. Applying a safely factor.

B. Allowing for part variability.

C. Following the 1.2 electrical ratio rule.

D. Derating.

145. When one performs "one experiment with five repetitions," what are the six experiments called ? A. Randomization.

B. Replications.

C. Planned grouping.

D. Sequential.

146. Often costs of quality reports reflect 4-5% of sales when the true amount is 15-20%. Which of the following cost categories is generally neglected ? A. Direct quality department expenses.

B. Indirect internal and external failure costs.

C. Preventative quality costs.

D. Combined appraisal and preventative expenses.

147. Which of the following terms apply to variable control charts ?

Ⅰ. Cumulative lines. Ⅱ. Process averages. Ⅲ. Control limits. Ⅳ. Process standard deviation. Ⅴ. Correlation coefficients. A.

Ⅰ and Ⅱ only

B.

Ⅱ and Ⅲ only

C.

- 32 -

Ⅱ and Ⅳ only

D.



148. An X bar chart has shown control for a long time. The points for the last 50 samples are all very near the center line on the chart. In fact, they are all within one sigma of the center line. This probably indicates that A. A desirable situation has occurred. B. An undesirable situation has occurred. C. The process standard deviation has decreased during the time the last 50 samples were taken. D. The control chart limits are incorrectly computed.

149. In planning process controls A. Deciding whether the process runs or not is determined by whether the resulting product conforms. B. The basic approach follows the servomechanism cycle so common in engineering. C. Collection of information goes hand-in-hand with decision making. D. Meeting process specification tolerances is the same as meeting product tolerances.

150. Objective evidence during the conduct of an audit can be collected via which of the following methods ?

Ⅰ. Interviews with personnel. Ⅱ. Reviews of old audit reports. Ⅲ. Examination of current documents. Ⅳ. Observation of actual conditions. A.

Ⅰ and Ⅲ only

B.


C.

Ⅰ,Ⅲ and Ⅳonly

D.

Ⅰ,Ⅱ,Ⅲ and Ⅳ

151. What is the key ranking difference between the Deming philosophy and the Malcolm Baldrige award criteria? A. Deming prescribes "all or nothing" propositions but MBNQA ranks categories with different weights. B. The MBNQA ranks "business results" and "customer focus", but Deming does not consider these items. C. The MBNQA has seven categories compared to Deming's 14 points. D. There is no recognized rating system for the MBNQA.

- 33 -

Sample Test #4

152. A supplier of cotton yarn claims that his product has an average breaking strength of 90 pounds. To test his claim, you select a random sample of 16 pieces of yarn. If the standard deviation of his process is unknown and one uses the normal curve theory instead of "t" distribution theory to test the null hypothesis, one would

Ⅰ. Increase the risk of a Type Ⅰerror. Ⅱ. Decrease the risk of a Type Ⅰerror. Ⅲ. Increase the risk of a Type Ⅱ error. A.

Ⅰ only.

B.

Ⅱ only.

C.

Ⅰ and Ⅱ only.

D.

Ⅰand Ⅲ only.

153. Which of the following quality tools is also a bar or column chart ? A. Control chart.

B. Ishikawa diagram.

C. Pareto diagram.

D. Scatter diagram.

154. In most cases, an improvement team facilitator will NOT normally : A. Be familiar with problem solving techniques.

B. Provide feedback to the group.

C. Function as the group leader.

D. Summarize key ideas generated by the group.

155. When confirming the results of an improvement, which of the following tools would be LEAST beneficial ? A. Pareto diagram.

B. Brainstorming.

C. Histograms.

156. Approved auditing interviewing includes which of the following techniques ?

Ⅰ. Open-ended questions. Ⅱ. Paraphrasing. Ⅲ. Probing. A.

Ⅰ, Ⅱ

B.

Ⅱ, Ⅲ

C.

Ⅰ, Ⅲ

- 34 -

D.

Ⅰ, Ⅱ, Ⅲ

D. Control charts.


157. A process is in control with

x = 50,

R = 4.0

and n = 6

The three-sigma limits of the process are approximately. A. 48.1 - 51.9

B. 45.3 - 54.7

C. 47.2 - 52.8

D. 47.0 - 53.0

158. If X and Y are independent random variables and if X has variance 3 and Y has variance 2, then the variance of 4X - 3Y is A. 18.

B. 66.

C. 6.

D. 30

159. If a distribution is skewed to the left

Ⅰ. The mode is between the median and the mean. Ⅱ. The mean is between the mode and the median. Ⅲ. The mode is greater than the median. A.

Ⅰ

B.

Ⅱ

C.

Ⅲ

D.

Ⅱ, Ⅲ

160. The authority for a quality audit program typically rests with which of the following ? A. The auditing organization.

B. The auditee.

C. A company's top management.

D. The quality department.

- 35 -

Sample Test #4

Solution #4 1

A

16

B

31

C

46

C

61

C

76

B

91

C 106 C 121 A 136 D 151 A

2

A

17

A

32

D

47

A

62

B

77

D

92

C 107 C 122 C 137 B 152 A

3

C

18

D

33

C

48

D

63

C

78

D

93

D 108 C 123 D 138 D 153 C

4

D

19

C

34

D

49

D

64

B

79

A

94

D 109 B 124 D 139 D 154 C

5

C

20

C

35

A

50

B

65

C

80

C

95

B 110 A 125 D 140 C 155 B

6

D

21

A

36

C

51

C

66

B

81

D

96

D 111 C 126 B 141 B 156 D

7

B

22

A

37

B

52

B

67

B

82

A

97

C 112 C 127 D 142 B 157 A

8

B

23

A

38

C

53

B

68

D

83

B

98

A 113 B 128 D 143 B 158 B

99

B 114 C 129 B 144 D 159 C

9

A

24

C

39

D

54

B

69

D

84

A

10

B

25

D

40

C

55

A

70

D

85

D 100 A 115 A 130 B 145 B 160 C

11

A

26

B

41

A

56

D

71

C

86

D 101 B 116 B 131 B 146 B

12

A

27

D

42

C

57

C

72

A

87

A 102 D 117 D 132 B 147 B

13

B

28

A

43

B

58

C

73

C

88

A 103 C 118 D 133 A 148 C

14

C

29

B

44

B

59

D

74

D

89

A 104 D 119 A 134 D 149 B

15

C

30

A

45

C

60

A

75

A

90

D 105 B 120 D 135 C 150 C

- 36 -

The Certified Quality Engineer Problem Bank 4

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