General Six Sigma Black Belt MCQs

1. What is mode?

2. The over-arching intent of a Six Sigma analysis is to:

3. Which of the following reflects the meaning of the word “Poka –Yoke”?

4. When would Cp equal Cpk in a capability index calculation?

5. What does a diamond symbol signify in a Process Map

6. When the mean of the process is outside the customer specification limits the value of Cpk will be:

7. Measuring a process' performance against that of a best-in-class peer or competitor, and then using the findings to identify opportunities to improve, is defined as what?

8. Which of the following are potential benefits of Process Mapping?

9. When considering the "rule of thumb" that 20% of the inputs result in 80% of the outputs, what graphical tool is effective for prioritizing Critical X's?

10. Team empowerment derives from: A. The organizational management B. Access to organizational information C. Access granted to organizational resources

11. Which of the following is an INAPPROPRiate application of a Pareto chart?

12. A team has been asked to improve the small purchase process in a firm. They decide to create a flow chart of the existing process because it will:

13. Which quality innovator formulated the cause and effect diagram?

14. The surface appearance of a refrigerator is not satisfactory. This statement is the outcome of what analysis/evaluation?

15. Six Sigma is a managerial approach designed to create processes resulting in at most how many defects?

16. What first step should six sigma projects begin with?

17. What does SIPOC stand for?

18. In an estimated Rolled Throughput Yield (RTY) equation, what is the Defects per Unit (DPU) threshold limit?

19. The objective of Design of Experiments (DOE) is to:

20. Why are variable control chart subgroup sizes generally 3, 4, 5, or 6? A: Larger subgroup sizes would permit an opportunity for process changes with the subgroup. B: They easily fit on traditional chart paper C: They are large enough so that averages of data will follow the normal distribution D: They permit a separation of within time from time-to-time variation

21. The mentor for a Green Belt exam should be at least be designated what?

22. TPM efforts attempt to minimize six big losses. Which of the following would NOT be included:

23. The proportion of units that go through a process for the first time without defect is called:

24. Excessive conflict within a work team: A: Has a positive effect on creating alternate solutions B: Most often results in lose-lose situations C: Has a negative effect on team members and should be avoided

25. What does the total area beneath a normal curve equate to?

26. Callaway makes golf clubs. Which of the following is not considered one of Callaways internal customers?

27. When implementing Statistical Process Control which of the following would be considered undesirable?

28. Which of the following tools is used to translate broad requirements to specific requirements:

29. Which of the following techniques is most suitable to collect requirements at the earliest stages of designing a process or a product

30. What is the F distribution used for?

31. When used together for variables data, which of the following pair of quantities is the most useful in preparing controls charts?

32. How is the risk priority number in a FMEA exercise derived?

33. The distribution of the average of n samples will follow which distribution as n becomes large?

34. The QFD process can be described as:

35. The tendency for highly cohesive groups to lose their critical evaluative capabilities is:

36. Which of the following methods model the effect of two or more inputs on an output variable?

37. Cpk can be done only if KS Test p-value is greater than

38. What is the most logical reason for using short run SPC charts?

39. Which of the following is not the preserve of a "Project Champion"

40. My company operates at a yield of 68.27%, At what sigmal level is my company operating at?

41. What six sigma technique is used to quantify the amount of error in a measurement system?

42. Which of the following represents how variance is computed?

43. A Six Sigma Black Belt would be responsible for all of the following except:

44. The following objective is relevant to which Phase of a DMAIC Six Sigma Project: To identify the process and Critical to Quality (CTQ) parameters which will be improved, using Voice of the Customer (VOC), Quality Function Deployment (QFD), Pareto Chart, etc.

45. Which of the following devices are associated with the visual factory

46. The following objectives are relevant to which Phase of a DMAIC Six Sigma Project: * Identify the measurable Y metric that will be improved. * Define a defect from the customer’s perspective * Ensure that you can trust the measurement of the Y

47. A process resulting in 99% accuracy to customer specifications, is equivalent to what Sigma level (Process Capability)?

48. Why is acceptance sampling conducted?

49. Subgroups are used in which types of SPC charts?

50. What does 5 sigma represent in defects per million opportunities (DPMO)?

51. After the completion of a process improvement, what two actions are required? A: The operating manual must be revised B: The operating documentation must be updated C: Management should be trained on the new changes D: The documentation users should be trained on the changes

52. Quality Function Deployment (QFD) is what kind of a tool?

53. The expected (theoretical) value for a cell in a contingency table is calculated by which formula:

54. A chart that contains defect types on the X axis, customers on the Y axis, and numbers of defects at the corresponding column and row intersections is called:

55. When the Upper Specification Limit (USL) and Lower Specification Limit (LSL) for a Six Sigma Process are plotted on a Normal Distribution, they are located at:

56. There is a 50% chance that a bike will be produced with a defect. This probability is called the:

57. What information does Cp convey?

58. Which of the following sets of variables can be controlled to change performance in six sigma?

59. Which of the following statements is NOT true regarding the short run set chart?

60. What does a control limit indicate?

61. Which of the following statements is false with respect to Gage R&R?

62. "Process ACME" involves the manufacturing of Smart boxes. In Process ACME, A,B,C & D are the opportunities for defects. In one such process, 20 defects were found in 100 smart boxes made. What is the six sigma level at which Process ACME is operating?

63. A manufacturer of bicycles would like to visualize where the defects occur on the bicycles. The defects encountered so far include missing bolts, paint peeling, missing decals, sharp edges, and bent metal parts. A useful tool for this application is a:

64. If four inspectors were evaluated for the detection and non-detection of a defect in twenty samples, how many degrees of freedom would be used to determine the critical chi-square value?

65. Which of the following is NOT a normally accepted control chart interpretation rule violation?

66. If the data set which gives a KS Test p-Value greater than 0.05, the data is called

67. Of the following, for what purpose would a p-chart be used?

68. A F-distribution most closely resembles:

69. Kano Model shows the path towards what behavior?

70. Cpk has been calculated for a stable, non-automated process. Then, the operator is told to check samples at random and make centering adjustments based on the sample readings. One would expect that:

71. Kanban concepts include all of the following, EXCEPT:

72. In Measurement System Analysis the variance contribution allowed for Gage R & R is a maximum of:

73. Which of the following is NOT an automated regression testing tool?

74. Which of the following statements about the Student T distribution are true? i) It has a mean of t=0 ii) As the sample size reduces, the student t distribution gets closer to the standard normal distribution iii) The standard deviation of the t distribution is always greater than 1

75. What design methodology uses the IDEA process for product definition and development?

76. The accuracy of a measuring instrument is linked to the U.S National Standards by:

77. What is the minimum allowed number of data points for Cpk Analysis