Full LEAN Six Sigma Yellow Belt Practice Exam

#1. How can you prevent regression in a newly improved process?

By implementing regular monitoring and controls

By analyzing past performance

By redesigning the process

By eliminating all defects

#2. What is the purpose of the 5 Whys technique?

To categorize defects

To identify potential solutions

To determine the root cause of a problem

To measure process capability

#3. Which methodology is primarily used in Six Sigma projects?

DMAIC (Define, Measure, Analyze, Improve, Control)

Agile

Plan-Do-Check-Act

Lean Transformation

#4. What is the outcome of a successful Improve phase?

An updated control plan

Validated and implemented process improvements

A detailed root cause analysis

A new project charter

#5. What is the purpose of error-proofing (Poka-Yoke)?

To prevent defects or errors from occurring

To measure process capability

To standardize tasks

To pilot solutions

#6. Why is documentation critical in the Control phase?

To identify root causes

To provide a reference for maintaining improvements

To measure process variation

To create a new project charter

#7. In FMEA, what does RPN stand for?

Risk Priority Number

Root Process Number

Risk Prevention Number

Reliability Performance Number

#8. What type of data is best captured with a check sheet?

Categorical data

Quantitative data

Qualitative data

Subjective data

#9. What is a key difference between qualitative and quantitative data?

Qualitative data uses control charts; quantitative data uses Pareto charts

Qualitative data is subjective; quantitative data is objective

Qualitative data is numerical; quantitative data is descriptive

Qualitative data measures defects; quantitative data measures root causes

#10. What is the significance of a low Cp value?

The process does not meet specification limits

The process has minimal defects

The process is highly capable

The process is well-centered

#11. When applying the 5 Whys, how many ‘Whys’ should you ask?

No more than 3

Only until a solution is identified

Exactly 5

As many as necessary to reach the root cause

#12. What does Shine mean in the 5S methodology?

To create process flow

To clean and inspect the workspace

To organize tools efficiently

To measure defects

#13. Which of the following is a primary use of a flowchart?

To prioritize significant causes

To monitor process performance

To collect process data

To represent steps in a process visually

#14. In FMEA, what does Severity represent?

The ease of detecting a failure

The total number of defects

The potential impact of a failure on the process

The probability of failure occurring

#15. How is a histogram used in Lean Six Sigma?

To visually represent the distribution of data

To identify root causes

To categorize data

To monitor process variation

#16. What does a Pareto chart help identify?

The variation in process performance

The distribution of data points

The most frequent causes of defects

The sequence of process steps

#17. What does ‘closing out a project’ involve?

Continuing root cause analysis

Identifying potential improvement areas

Revising the project charter

Completing the project handover and documenting outcomes

#18. What is a flowchart commonly used for?

To monitor process stability

To visually map out process steps and decision points

To prioritize defects

To calculate risk priority numbers

#19. Which of the following is an example of error-proofing?

Labeling tools

Creating a visual management board

Using a machine that stops automatically if an error occurs

Performing root cause analysis

#20. What is a primary objective of the Measure phase?

To collect data to establish process baselines

To train team members

To monitor process performance

To identify potential solutions

#21. What type of data is typically used in cause-and-effect analysis?

Descriptive data only

Categorical data

Continuous data only

Qualitative and quantitative data

#22. What is FMEA used for?

To measure process capability

To standardize work

To identify potential process failures and their effects

To collect customer feedback

#23. What principle does the Pareto chart follow?

Process standardization

The law of averages

The 80/20 rule

Cause-and-effect analysis

#24. What is the goal of the Analyze phase?

To implement solutions

To identify and validate root causes

To monitor ongoing performance

To document process changes

#25. Which of the following is an example of waste in Lean?

Reduced lead times

Overproduction

Standardized work

Efficient inventory management

#26. What is a check sheet used for?

To monitor process variation

To analyze root causes

To collect and organize data in a structured format

To identify process bottlenecks

#27. What is the primary goal of Lean Six Sigma?

To eliminate all variation in a process

To create a perfect product

To improve process efficiency and reduce waste

To implement statistical tools in all projects

#28. What is the purpose of sampling methods in data collection?

To identify root causes

To improve customer satisfaction

To gather representative data efficiently

To reduce process variation

#29. Which diagram is used in high-level process mapping?

Fishbone diagram

Pareto chart

Control chart

SIPOC diagram

#30. What is Gage R&R used for in MSA?

To evaluate measurement system repeatability and reproducibility

To identify root causes of defects

To assess the reliability of equipment

To measure process efficiency

#31. Why is it important to evaluate results after piloting a solution?

To redesign the process

To create a new project charter

To confirm the solution's effectiveness

To monitor baseline performance

#32. What does FMEA stand for?

Failure Mode and Effectiveness Analysis

Failure Mode and Engineering Assessment

Failure Management and Effects Assessment

Failure Mode and Effects Analysis

#33. What is piloting a solution?

Monitoring process performance

Testing the solution on a small scale

Implementing the solution fully

Documenting process changes

#34. What is an upper control limit in a control chart?

The maximum acceptable process variation

A measure of customer satisfaction

The total defect rate

The average process performance

#35. What does MSA (Measurement Systems Analysis) evaluate?

The total number of defects

The capability of the process

The accuracy and precision of the measurement system

The effectiveness of brainstorming

#36. Which of the following is a benefit of process mapping?

It identifies critical steps and inefficiencies

It measures process variation

It monitors process performance

It eliminates defects in a process

#37. What is included in a project close-out report?

Baseline performance metrics

A control chart

Root cause analysis results

A summary of improvements, lessons learned, and final metrics

#38. What is the purpose of FMEA?

To reduce process variation

To prioritize significant causes

To identify potential failure modes and their effects

To monitor process performance

#39. Why is it important to train employees on new standardized processes?

To ensure ongoing process adherence

To identify process defects

To validate root causes

To measure process performance

#40. What is a Kaizen event?

A tool for monitoring defects

A visual representation of process flow

A statistical analysis of process performance

A structured activity focused on rapid process improvement

#41. Which tool is best for categorizing causes into groups?

Pareto chart

Histogram

Control chart

Fishbone diagram

#42. What is the final step in the Control phase?

Implementing monitoring and control measures

Conducting a root cause analysis

Reducing process variation

Documenting process changes and closing the project

#43. What is the purpose of control limits in process capability?

To set process improvement goals

To eliminate defects

To monitor natural process variation

To determine specification limits

#44. What is process thinking?

Focusing on waste reduction only

Understanding processes as interrelated steps contributing to outcomes

Eliminating all variation in processes

Focusing only on individual tasks

#45. Which of the following is a key element of process control?

Defining project scope

Creating process maps

Brainstorming improvement ideas

Regular monitoring of key metrics

#46. What are the two key limits in a control chart?

Specification limits and tolerance limits

Upper control limit and lower control limit

Frequency limit and time limit

Target line and process variation line

#47. What is the purpose of the upper and lower control limits on a control chart?

To monitor acceptable process variation

To define specification limits

To indicate average process performance

To identify root causes

#48. What is a key component of ensuring ongoing process control?

Analyzing root causes

Revisiting project objectives

Establishing feedback loops for continuous monitoring

Redesigning the process

#49. What does a process map NOT typically include?

Process steps

Inputs and outputs

Roles and responsibilities

Potential failure modes

#50. In a Fishbone diagram, where is the main problem written?

At the top of the diagram

At the head of the diagram

At the end of each branch

In the center of the diagram

#51. What is the role of standard work?

To monitor defects

To document the best-known process steps

To identify waste

To brainstorm solutions

#52. What is the key benefit of using FMEA in Lean Six Sigma?

It identifies and mitigates potential process failures before they occur

It improves customer satisfaction directly

It ensures defect-free performance

It eliminates process variation

#53. What does a Check Sheet help with?

Documenting process flow

Monitoring defects over time

Organizing data collection efficiently

Measuring process capability

#54. What is a process map?

A statistical tool for monitoring performance

A list of defects in a process

A method for identifying root causes

A visual representation of the steps in a process

#55. What does a Pareto chart illustrate?

Variation over time

A process flow

A breakdown of causes by category

The most significant factors contributing to a problem

#56. Which type of data includes categories like ‘pass’ or ‘fail’?

Interval data

Continuous data

Attribute data

Variable data

#57. What is the purpose of a Pareto chart?

To prioritize the most significant causes of a problem

To monitor process performance over time

To map process steps

To collect process data

#58. Which of the following describes a control chart?

A diagram for organizing data

A graphical representation of causes

A tool to monitor process variation over time

A method for brainstorming solutions

#59. What does the height of a bar represent in a histogram?

The total process variation

The average value of data

The cumulative frequency of data

The frequency of occurrences in a specific range

#60. Which Lean Six Sigma tool is best for visualizing the distribution of data?

Histogram

Check sheet

Flowchart

Pareto chart

#61. What is the main purpose of monitoring tools in the Control phase?

To analyze defects

To implement process changes

To collect baseline data

To sustain improvements and detect deviations

#62. What is a key requirement for valid data in the Measure phase?

It must come from a reliable measurement system

It must include only continuous data

It must be collected by project sponsors

It must be sampled from historical records

#63. What is the primary purpose of process mapping?

To eliminate defects

To visually document and understand process flow

To create process standards

To measure process performance

#64. Which tool would be most useful for analyzing the distribution of data?

Control chart

Pareto chart

Fishbone diagram

Histogram

#65. What is a key consideration when implementing solutions?

Measuring baseline performance metrics

Analyzing defects in previous processes

Training employees and stakeholders on changes

Avoiding customer feedback

#66. What is the purpose of Poka-Yoke?

To visualize process steps

To standardize processes

To prevent or detect errors early

To collect process data

#67. What is the purpose of using basic statistical tools in the Analyze phase?

To brainstorm process improvements

To implement solutions

To collect new data

To validate root causes and analyze patterns

#68. What are Critical to Quality (CTQ) requirements?

Customer-defined process goals

Metrics for monitoring process performance

Standards for regulatory compliance

Employee satisfaction metrics

#69. What does DPMO stand for?

Defects Per Measurement Objective

Defects Per Manufacturing Output

Defects Per Million Outputs

Defects Per Million Opportunities

#70. Which tool is also called a Fishbone diagram?

Control chart

Histogram

Ishikawa diagram

Pareto chart

#71. What is the difference between Cp and Cpk?

Cpk measures defects, while Cp measures variation

Cp measures potential capability, while Cpk considers mean variation

Cp accounts for process centering, while Cpk does not

Cp measures defects per million opportunities, while Cpk measures capability

#72. What does ‘Shine’ mean in the context of 5S?

To improve customer satisfaction

To clean and inspect the workspace regularly

To create a new process map

To brainstorm solutions

#73. What is the purpose of an X-bar chart?

To track individual defect occurrences

To measure process capability

To monitor the average performance of a process

To identify root causes

#74. What does a project charter define?

Root causes and proposed solutions

Control limits and process baselines

Customer satisfaction metrics

Project goals, scope, and team responsibilities

#75. What is the primary output of the Analyze phase?

An improved process

Validated root causes of the problem

A detailed project charter

Baseline performance metrics

#76. Which of the following is a step in piloting solutions?

Identifying root causes

Creating a Fishbone diagram

Testing the solution on a small scale

Developing a control plan

#77. What is a key advantage of using the 5 Whys technique?

It categorizes causes into groups

It guarantees a solution to the problem

It is quick and easy to perform

It requires statistical analysis

#78. What does SIPOC stand for?

Systems, Inputs, Procedures, Outputs, Customers

Suppliers, Innovation, Process, Optimization, Controls

Systems, Integration, Products, Optimization, Compliance

Suppliers, Inputs, Process, Outputs, Customers

#79. How is the Voice of the Customer (VOC) typically captured?

Process capability analysis

Control charts

Surveys, interviews, and feedback forms

Fishbone diagrams

#80. What do Cp and Cpk measure in process capability analysis?

Error rates and defects

Customer satisfaction

Process variation and capability

Sampling frequency

#81. What does ‘5S’ stand for in Lean methodology?

Sort, Simplify, Sustain, Strategize, Solve

Strategy, Standardize, Sustain, Solve, Streamline

Sustain, Standardize, Simplify, Streamline, Sort

Sort, Set in Order, Shine, Standardize, Sustain

#82. What is the primary focus of the 5 Whys analysis?

Developing a new process

Reducing process variation

Identifying all potential solutions

Determining the root cause of a problem

#83. What is the purpose of a control chart?

To collect baseline data

To visualize process flow

To monitor variation in process performance over time

To prioritize significant causes

#84. What is a key benefit of standard work?

It eliminates all process defects

It identifies root causes

It reduces customer complaints

It ensures consistent process performance

#85. What does a Sigma level of 6 represent?

99.9997% defect-free performance

High process variation

3.4 defects per 1000 opportunities

99.73% defect rate

#86. What does the lower control limit in a control chart indicate?

The total number of defects

The minimum acceptable level of process variation

The point at which the process is out of control

The target value for the process

#87. What is a key benefit of standardizing new processes?

It reduces customer complaints

It eliminates the need for training

It ensures process performance remains consistent

It guarantees 100% defect-free results

#88. Which Lean tool focuses on organizing and maintaining a clean workspace?

5S

Kaizen

Standard work

Poka-Yoke

#89. What does RPN stand for in FMEA?

Risk Priority Number

Root Problem Notation

Risk Prevention Network

Reliability Process Number

#90. What does ‘Set in Order’ mean in the 5S methodology?

To clean the workspace

To identify defects

To arrange tools and materials for easy access

To create a process map

Results

#1. How can you prevent regression in a newly improved process?

#2. What is the purpose of the 5 Whys technique?

#3. Which methodology is primarily used in Six Sigma projects?

#4. What is the outcome of a successful Improve phase?

#5. What is the purpose of error-proofing (Poka-Yoke)?

#6. Why is documentation critical in the Control phase?

#7. In FMEA, what does RPN stand for?

#8. What type of data is best captured with a check sheet?

#9. What is a key difference between qualitative and quantitative data?

#10. What is the significance of a low Cp value?

#11. When applying the 5 Whys, how many ‘Whys’ should you ask?

#12. What does Shine mean in the 5S methodology?

#13. Which of the following is a primary use of a flowchart?

#14. In FMEA, what does Severity represent?

#15. How is a histogram used in Lean Six Sigma?

#16. What does a Pareto chart help identify?

#17. What does ‘closing out a project’ involve?

#18. What is a flowchart commonly used for?

#19. Which of the following is an example of error-proofing?

#20. What is a primary objective of the Measure phase?

#21. What type of data is typically used in cause-and-effect analysis?

#22. What is FMEA used for?

#23. What principle does the Pareto chart follow?

#24. What is the goal of the Analyze phase?

#25. Which of the following is an example of waste in Lean?

#26. What is a check sheet used for?

#27. What is the primary goal of Lean Six Sigma?

#28. What is the purpose of sampling methods in data collection?

#29. Which diagram is used in high-level process mapping?

#30. What is Gage R&R used for in MSA?

#31. Why is it important to evaluate results after piloting a solution?

#32. What does FMEA stand for?

#33. What is piloting a solution?

#34. What is an upper control limit in a control chart?

#35. What does MSA (Measurement Systems Analysis) evaluate?

#36. Which of the following is a benefit of process mapping?

#37. What is included in a project close-out report?

#38. What is the purpose of FMEA?

#39. Why is it important to train employees on new standardized processes?

#40. What is a Kaizen event?

#41. Which tool is best for categorizing causes into groups?

#42. What is the final step in the Control phase?

#43. What is the purpose of control limits in process capability?

#44. What is process thinking?

#45. Which of the following is a key element of process control?

#46. What are the two key limits in a control chart?

#47. What is the purpose of the upper and lower control limits on a control chart?

#48. What is a key component of ensuring ongoing process control?

#49. What does a process map NOT typically include?

#50. In a Fishbone diagram, where is the main problem written?

#51. What is the role of standard work?

#52. What is the key benefit of using FMEA in Lean Six Sigma?

#53. What does a Check Sheet help with?

#54. What is a process map?

#55. What does a Pareto chart illustrate?

#56. Which type of data includes categories like ‘pass’ or ‘fail’?

#57. What is the purpose of a Pareto chart?

#58. Which of the following describes a control chart?

#59. What does the height of a bar represent in a histogram?

#60. Which Lean Six Sigma tool is best for visualizing the distribution of data?

#61. What is the main purpose of monitoring tools in the Control phase?

#62. What is a key requirement for valid data in the Measure phase?

#63. What is the primary purpose of process mapping?

#64. Which tool would be most useful for analyzing the distribution of data?

#65. What is a key consideration when implementing solutions?

#66. What is the purpose of Poka-Yoke?

#67. What is the purpose of using basic statistical tools in the Analyze phase?

#68. What are Critical to Quality (CTQ) requirements?

#69. What does DPMO stand for?

#70. Which tool is also called a Fishbone diagram?

#71. What is the difference between Cp and Cpk?

#72. What does ‘Shine’ mean in the context of 5S?

#73. What is the purpose of an X-bar chart?

#74. What does a project charter define?

#75. What is the primary output of the Analyze phase?

#76. Which of the following is a step in piloting solutions?

#77. What is a key advantage of using the 5 Whys technique?

#78. What does SIPOC stand for?

#79. How is the Voice of the Customer (VOC) typically captured?