LSS Green Belt practice questions: Define

5 free questions from 32 on this area · answer and explanation for each · no sign-up

These 5 questions come from the Define section of our LSS Green Belt bank (32 questions on this area, which carries 20% of the real exam). Every question is original, with the correct answer explained and linked to the source it is drawn from.

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1/5 · Define

A loan application document is physically routed through five separate departments for signatures before final approval, even though none of those departments modify its content. Which of the seven wastes (TIMWOOD) does this scenario best illustrate?

ATransportation

BMotion

CInventory

DOverproduction

Answer: A. The seven wastes (TIMWOOD) include Transportation, Inventory, Motion, Waiting, Overproduction, Overprocessing, and Defects. Moving a document between departments that add no value is a textbook example of transportation waste, distinct from motion (movement of a person) or inventory (accumulation of items). Source: the IASSC Lean Six Sigma Green Belt Body of Knowledge (ILSSBOK, PeopleCert syllabus) — Define

2/5 · Define

A customer survey comment states: 'I want my order fast.' A team is using a CTQ (Critical to Quality) tree to translate this Voice of the Customer statement into a measurable specification. Which of the following best represents a properly completed CTQ specification?

A'Orders must be delivered within 24 hours of order confirmation.'

B'Fast delivery is important to customers.'

C'Speed is a driver of overall customer satisfaction.'

D'The company should improve its shipping department.'

Answer: A. A CTQ tree breaks down a broad VOC statement (a 'driver') into specific, measurable performance requirements. A properly formed CTQ must include a measurable target, such as a defined time window, so that performance against it can be tracked. 'Delivered within 24 hours' is measurable and actionable, unlike vague restatements of the original need. Source: the IASSC Lean Six Sigma Green Belt Body of Knowledge (ILSSBOK, PeopleCert syllabus) — Define

3/5 · Define · easy

In the Six Sigma problem-solving equation Y = f(x), which statement best describes the relationship being expressed?

AY represents the sigma level of a process, while x represents the number of defect opportunities.

BY and x are interchangeable terms both used to denote the process output measured on a control chart.

CY is the output (the dependent variable, or effect) that is determined by one or more x's, the independent variables representing process inputs or causes.

DY represents the input variables that a team can directly control, while x represents the output the customer experiences.

Answer: C. Y=f(x) is introduced early in the Define phase as the guiding philosophy of Six Sigma: the output or result a business cares about (Y) is a function of one or more input/process variables (x's). Identifying and controlling the critical x's is how teams ultimately improve Y throughout the DMAIC project. Source: the IASSC Lean Six Sigma Green Belt Body of Knowledge (ILSSBOK, PeopleCert syllabus) — Define

4/5 · Define · easy

Within a Lean Six Sigma project charter, which section is specifically intended to justify why the organization should commit resources to the project by linking it to strategic or financial priorities?

AProblem Statement

BProject Scope

CBusiness Case

DProject Metrics

Answer: C. The business case is the charter element that connects a project to organizational goals, expected financial or strategic benefit, and urgency, giving sponsors a reason to approve resources. Problem statements, scope, and metrics all support the charter but serve different, more narrowly defined purposes. Source: the IASSC Lean Six Sigma Green Belt Body of Knowledge — Define

5/5 · Define

A project team decides that reviewing the existing customer complaint log is sufficient, by itself, to fully capture the Voice of the Customer for a Green Belt project. Why is this approach incomplete per accepted VOC practice?

AComplaint logs capture only reactive feedback from already-dissatisfied customers; VOC collection should also use proactive methods such as surveys, interviews, or focus groups to hear from the broader, often-silent customer base.

BComplaint logs already represent proactive VOC data, so the only remaining gap is translating them into CTQs.

CVOC can only be collected after CTQs have already been defined, so reviewing any complaint data at Define is premature regardless of source.

DComplaint logs cannot be used at all in a Six Sigma project because they contain only qualitative, non-numeric data.

Answer: A. Relying solely on complaint data gives a skewed, reactive picture of customer needs. Sound VOC practice combines passive data (complaints, warranty claims) with proactive methods (surveys, interviews, focus groups) to represent the full customer base before translating findings into CTQs. Source: the IASSC Lean Six Sigma Green Belt Body of Knowledge — Define

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