Lean Six Sigma Green Belt Certification FREE Lean Six Sigma Green Belt DMAIC: Improve and Control Questions and Answers 2

Question 1

Which tool is most commonly used in the Improve phase to identify the optimal settings for key process variables?

Accepted Answer

Design of Experiments (DOE)

Answer

Control Chart

Answer

Pareto Chart

Answer

SIPOC Diagram

Question 2

What is the primary purpose of a control plan in the Control phase of DMAIC?

Accepted Answer

To document the system for monitoring and controlling key process variables

Answer

To identify root causes of defects

Answer

To define the project scope

Answer

To collect baseline data

Question 3

In the Improve phase, what does a pilot test help the team accomplish before full-scale implementation?

Accepted Answer

Validate the proposed solution on a small scale to identify risks

Answer

Establish the project charter

Answer

Create a value stream map

Answer

Calculate the process sigma level

Question 4

Which type of control chart would be most appropriate for monitoring the number of defects per unit after implementing improvements?

Accepted Answer

U-chart

Answer

X-bar and R chart

Answer

P-chart

Answer

I-MR chart

Question 5

What is the purpose of conducting a Failure Modes and Effects Analysis (FMEA) during the Improve phase?

Accepted Answer

To prioritize potential failures by severity, occurrence, and detection before implementing solutions

Answer

To map the current state of the process

Answer

To calculate the cost of poor quality

Answer

To verify measurement system accuracy

Question 6

What does Statistical Process Control (SPC) primarily help a team detect during the Control phase?

Accepted Answer

Special cause variation indicating the process has shifted out of control

Answer

Common cause variation that is inherent to the process

Answer

The average cycle time of the process

Answer

The total number of defects produced