Certified Six Sigma Black Belt Exam DMAIC Methodology 1

Question 1

Which DMAIC phase involves creating a project charter and identifying the voice of the customer (VOC)?

Accepted Answer

Define

Answer

The Define phase establishes the project scope, goals, and customer requirements through tools like the project charter, SIPOC diagram, and VOC analysis.

Question 2

A Six Sigma team has identified a high defect rate and now wants to establish baseline process capability. Which DMAIC phase are they in?

Accepted Answer

Measure

Answer

The Measure phase quantifies the current process performance by collecting data and calculating baseline capability indices such as Cp and Cpk.

Question 3

Which tool is most commonly used in the Analyze phase to visually organize potential causes of a problem?

Accepted Answer

Fishbone (Ishikawa) diagram

Answer

The Fishbone (Ishikawa) diagram, also called a cause-and-effect diagram, is a core Analyze-phase tool used to systematically identify and categorize potential root causes.

Question 4

During which DMAIC phase would a team use Design of Experiments (DOE) to test potential solutions?

Accepted Answer

Improve

Answer

The Improve phase uses tools like DOE to systematically test and optimize solutions, identifying which input variables most significantly affect the output.

Question 5

A process improvement team has implemented a solution and now wants to create a response plan for when the process drifts out of control. Which DMAIC phase applies?

Accepted Answer

Control

Answer

The Control phase uses tools like control charts and control plans—including response plans—to sustain gains and ensure the process remains stable over time.

Certified Six Sigma Black Belt Exam Practice Test

Certified Six Sigma Black Belt Exam Practice Test

Certified Six Sigma Black Belt Exam DMAIC Methodology 1