FREE Lean Six Sigma Green Belt Control Phase Monitoring Questions and Answers

Question 1

Which of the following is the primary purpose of a Control Plan in the Lean Six Sigma Control Phase?

Accepted Answer

To detail the methods for sustaining the gains achieved during the project.

Answer

To document the steps for collecting baseline data on the improved process.

Answer

To identify potential root causes that were missed in the Analyze phase.

Answer

To brainstorm new solutions if the implemented improvements are ineffective.

Question 2

A Green Belt has successfully implemented changes to reduce defects in a production line. To continuously monitor the effectiveness of these changes and ensure the process remains stable, which statistical tool is most appropriate for tracking the defect rate over time?

Accepted Answer

Control Chart

Answer

Histogram

Answer

Pareto Chart

Answer

Scatter Plot

Question 3

During the Control Phase, a process owner notices that a critical process output has started drifting towards the upper specification limit, even though it's still within the control limits. What should be the immediate course of action?

Accepted Answer

Investigate potential causes for the drift and consider proactive adjustments.

Answer

Immediately implement a new set of countermeasures without further investigation.

Answer

Ignore the drift as long as the output remains within the control limits.

Answer

Revert to the old process immediately, assuming the improvement failed.

Question 4

Which of the following best describes the role of a Standard Operating Procedure (SOP) in the Control Phase?

Accepted Answer

To document the step-by-step instructions for performing a process consistently.

Answer

To identify the Voice of the Customer for future projects.

Answer

To analyze the root causes of process variations.

Answer

To gather initial baseline data for the project's 'before' state.

Question 5

A Green Belt team has successfully reduced the average processing time for customer orders. In the Control Phase, they decide to implement a visual management board that displays the daily processing time and highlights any deviation from the target. This is an example of:

Accepted Answer

A Control Plan element.

Answer

A Measurement System Analysis (MSA).

Answer

A Fishbone Diagram.

Answer

A Pareto Chart application.

Question 6

What is the primary objective of 'response plans' within a Control Plan?

Accepted Answer

To define the actions to be taken when a process deviates from its controlled state.

Answer

To outline how to collect more data if the process goes out of control.

Answer

To identify new improvement opportunities for future projects.

Answer

To document the original problem statement from the Define Phase.