Lean Six Sigma Green Belt Certification Lean Six Sigma Green Belt DMAIC: Define Phase Concepts 1

Question 1

Which component of the Project Charter explicitly defines what is included and excluded from a Lean Six Sigma project?

Accepted Answer

Project scope

Answer

The project scope sets the boundaries of the project — what processes, products, locations, or time periods are in and out of scope. Without a clearly defined scope, teams risk scope creep and loss of focus.

Question 2

A well-written problem statement in the Define phase should include which of the following?

Accepted Answer

A description of what is wrong, where it occurs, and its measurable magnitude

Answer

A problem statement describes the current gap — what is happening, where, and to what extent — without assigning blame or proposing solutions. Jumping to solutions in the Define phase bypasses proper analysis.

Question 3

Which model used in the Define phase categorizes customer requirements into must-be, one-dimensional, and attractive (delighter) features?

Accepted Answer

Kano model

Answer

The Kano model classifies VOC into three tiers: must-be requirements (basic expectations), one-dimensional requirements (more is better), and attractive features (unexpected delighters). It helps teams prioritize which CTQs drive the most customer satisfaction.

Question 4

What is the primary purpose of a Critical to Quality (CTQ) tree in the Define phase?

Accepted Answer

To break down broad customer needs into specific, measurable performance requirements

Answer

A CTQ tree translates high-level VOC statements (e.g., 'I want fast service') into quantifiable requirements (e.g., 'order fulfilled within 2 hours'). This bridges the gap between customer language and measurable project targets.

Question 5

In the Define phase, a RACI matrix is primarily used to:

Accepted Answer

Clarify team member roles and decision-making authority for the project

Answer

RACI (Responsible, Accountable, Consulted, Informed) ensures every team member and stakeholder understands their role. Defining accountability early in the Define phase prevents confusion and conflict during later DMAIC phases.

Lean Six Sigma Green Belt Certification Practice Test

Lean Six Sigma Green Belt Certification Practice Test

Lean Six Sigma Green Belt Certification Lean Six Sigma Green Belt DMAIC: Define Phase Concepts 1