Free Lean Six Sigma Yellow Belt Certification Prep Questions and Answers

Question 1

Which of the following is most likely a CTQ (Critical-to-Quality) when buying a service?

Accepted Answer

All of the above

Answer

Critical-to-Quality (CTQ) characteristics are key measurable attributes of a product or service that are crucial for customer satisfaction. When purchasing a service, customers typically value timeliness, the absence of errors (requiring no redo), and clear documentation. Therefore, all these factors are critical to a customer's perception of a high-quality service.

Question 2

Which of the following statements about the Six Sigma approach is accurate?

Accepted Answer

It is a methodology based on factual data.

Answer

Six Sigma is fundamentally a data-driven methodology that employs statistical analysis to identify and eliminate defects and improve processes. Its core principle is to make decisions and drive improvements based on objective, factual data rather than assumptions or intuition. While it aims for lean processes and reduces defects, its foundation is rooted in empirical evidence.

Question 3

The Y in the equation Y = F(X) is

Accepted Answer

Output

Answer

In the Six Sigma equation Y = F(X), Y represents the desired outcome, result, or characteristic of a process, which is the 'output.' The X's represent the input variables or factors that influence that output. The equation illustrates that the output (Y) is a function of, or dependent on, the inputs (X).

Question 4

What is the effect of applying Six Sigma?

Accepted Answer

The production of defective products is reduced

Answer

The primary objective of applying Six Sigma is to reduce process variation and defects to a near-zero level, specifically aiming for 3.4 defects per million opportunities. By achieving this, organizations significantly decrease the production of defective products or services, leading to improved quality, increased customer satisfaction, and substantial cost savings.

Question 5

Which Six Sigma step involves validating the measurement system and measuring the performance of the current process?

Accepted Answer

Measure

Answer

The 'Measure' phase in the DMAIC (Define, Measure, Analyze, Improve, Control) methodology is dedicated to collecting data about the current process performance. This includes validating the accuracy and reliability of the measurement system (e.g., through Gauge R&R studies) and then systematically gathering baseline data on the process's defects, cycle time, and other relevant metrics to understand its current state.

Lean Six Sigma Yellow Belt Certification Practice Test

Lean Six Sigma Yellow Belt Certification Practice Test

Free Lean Six Sigma Yellow Belt Certification Prep Questions and Answers