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Green Belt

Duration

90 minutes

Questions

90

Test Instructions:

  • You have 90 minutes to complete the test
  • You can flag questions for review
  • You can navigate between questions freely
  • Make sure to submit your test before time runs out
  • You cannot pause the timer once started
  • Passing score: 75%

1 / 90

What does "poka-yoke" refer to?

2 / 90

When should you use a paired t-test?

3 / 90

Which metric shows the spread of data?

4 / 90

What does the term "Voice of Process" (VOP) refer to?

5 / 90

Which concept refers to organizing the workplace for efficiency using 5S?

6 / 90

What does a stable process mean?

7 / 90

What does a Control Chart NOT do?

8 / 90

What is the best method to monitor a process post-implementation?

9 / 90

What is the primary goal of the Analyze phase in DMAIC?

10 / 90

Which sampling method selects every nth item?

11 / 90

What should you do if your implemented solution improves only short-term results?

12 / 90

What does SMED aim to reduce?

13 / 90

A measurement system analysis (MSA) evaluates:

14 / 90

Which tool displays combinations of causes and effects?

15 / 90

What is a pilot test in process improvement?

16 / 90

What does VOC stand for in Six Sigma?

17 / 90

What does an ANOVA test determine?

18 / 90

What is the Y in the equation Y = f(X)?

19 / 90

In Six Sigma, a Black Belt is responsible for:

20 / 90

A spaghetti diagram is used to:

21 / 90

What is the primary goal of the Control phase in DMAIC?

22 / 90

Which tool is used to capture the relationship between two variables?

23 / 90

Who is responsible for sustaining process improvements?

24 / 90

What is “Gage R&R”?

25 / 90

What does the R chart in an X̄ and R chart show?

26 / 90

In hypothesis testing, α represents:

27 / 90

What is the primary goal of the Measure phase?

28 / 90

What is the purpose of visual controls?

29 / 90

The purpose of Kaizen is:

30 / 90

What does the term “rolled throughput yield” (RTY) refer to?

31 / 90

What is multicollinearity in regression analysis?

32 / 90

A new process was implemented, but cycle time hasn’t improved. What’s the next step?

33 / 90

Which is NOT a benefit of implementing a Lean improvement?

34 / 90

Which tool helps assess risk and prioritize corrective actions?

35 / 90

What Lean tool focuses on reducing steps that do not add value?

36 / 90

What is the "5 Whys" method used for?

37 / 90

Which of the following is a key benefit of a well-implemented Six Sigma project?

38 / 90

What is the ideal takt time for a process?

39 / 90

A process map that includes decision points is called a:

40 / 90

In hypothesis testing, the null hypothesis typically assumes:

41 / 90

What type of data are “temperature readings”?

42 / 90

Which term describes the customer’s basic requirements in Six Sigma?

43 / 90

Data collected at 2-minute intervals is what type?

44 / 90

Which term describes the customer’s basic requirements in Six Sigma?

45 / 90

What does an R² value of 0.92 indicate?

46 / 90

When variation is due to common causes, it means:

47 / 90

For small sample sizes and unknown population variance, use:

48 / 90

What is the main advantage of a Design of Experiments (DOE)?

49 / 90

If the customer is not involved in the DMAIC process, what is most likely to occur?

50 / 90

What does correlation measure?

51 / 90

Which tool is most commonly used for identifying potential causes of a problem?

52 / 90

What does SIPOC stand for?

53 / 90

The Kano Model is used to:

54 / 90

A p-value of 0.03 with α = 0.05 indicates:

55 / 90

What is the formula for Defects per Million Opportunities (DPMO)

56 / 90

What is the purpose of a control plan?

57 / 90

Which Lean concept helps visualize workflow and limit WIP (Work In Progress)

58 / 90

Which of the following is NOT a Lean principle?

59 / 90

Which of the following helps detect special cause variation?

60 / 90

Which Control chart should be used for tracking individual continuous data points?

61 / 90

A defect is defined as:

62 / 90

A p-value greater than α means you should:

63 / 90

When should you create a project charter?

64 / 90

After implementing a solution, the process mean shifted. What should you do?

65 / 90

Which analysis helps evaluate the influence of independent variables on a dependent variable?

66 / 90

The “Measure of central tendency” refers to:

67 / 90

Which test compares means between two independent groups?

68 / 90

In Six Sigma, what is the term for the cost incurred due to errors before delivery to the customer?

69 / 90

Which Lean tool is most appropriate for identifying and reducing movement waste?

70 / 90

What does DMAIC stand for?

71 / 90

A successful control plan includes all EXCEPT:

72 / 90

An X̄ chart is used to:

73 / 90

Which chart is best for monitoring count-type data (e.g., number of defects)?

74 / 90

What is a response plan used for in the Control phase?

75 / 90

In Lean, what are the 8 types of waste?

76 / 90

Which chart monitors subgroup variation?

77 / 90

If a process is centered but has high variation, what is the most appropriate action?

78 / 90

What is the effect of reducing process variation?

79 / 90

Which of the following is used to standardize new best practices across operations?

80 / 90

Capability (Cp) describes:

81 / 90

What is a Type I error?

82 / 90

In a cause-and-effect diagram, what category would “training” typically fall under?

83 / 90

What does a Cp value of 1.0 indicate?

84 / 90

Which tool is best for brainstorming improvement ideas?

85 / 90

A box plot is helpful for showing:

86 / 90

In a histogram, what does the x-axis represent?

87 / 90

What does a high process sigma level indicate?

88 / 90

What is the main objective of the Improve phase?

89 / 90

What is a CTQ tree used for?

90 / 90

A Pareto chart is based on which principle?

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