Free Certified Six Sigma Black Belt Basic Questions and Answers

Question 1

A system has been put in place by a business to stop orders with inaccurate information from being sent to production scheduling. Which one of the following lean tools best describes this?

Accepted Answer

Poka-Yoke

Answer

Poka-Yoke, also known as mistake-proofing, is a lean tool designed to prevent errors from occurring or to make them immediately obvious. By implementing a system that stops orders with inaccurate information, the business is creating a mechanism that prevents defects (inaccurate orders) from proceeding to the next stage (production scheduling). This directly aligns with the principle of Poka-Yoke.

Question 2

Which of the following is a visual factory component?

Accepted Answer

Product specifications

Answer

A visual factory aims to make the status of operations, standards, and performance immediately obvious to everyone at a glance. Product specifications, when clearly displayed and accessible, serve as a visual reference for quality standards and requirements. This allows workers to quickly understand what needs to be produced and to what standard, promoting consistency and reducing errors without needing to consult complex documents.

Question 3

Which of the tools listed below can be used to spot wasteful or value-diminishing activities?

Accepted Answer

Process map

Answer

A process map visually depicts the steps involved in a process, including inputs, outputs, decisions, and delays. By mapping out the entire flow, it becomes easier to identify non-value-added steps, bottlenecks, redundancies, and areas where waste (like waiting, rework, or unnecessary movement) occurs. This visual representation is crucial for understanding the current state and pinpointing opportunities for improvement.

Question 4

The anticipated value closely matches the term.

Accepted Answer

Mean

Answer

In statistics, the "expected value" of a random variable is synonymous with its mean or average. It represents the long-run average outcome if an experiment were repeated many times. Therefore, when discussing the anticipated value of a distribution or a set of data, the term "mean" is the closest and most accurate statistical equivalent.

Question 5

The objective of a measuring system analysis is to evaluate the statistical characteristics of

Accepted Answer

Process stability

Answer

A Measurement System Analysis (MSA) evaluates the statistical characteristics of a measurement system (e.g., its bias, linearity, stability, and variation) to ensure it is accurate and precise. The ultimate goal is to ensure that the data collected truly reflects the performance and stability of the process being measured, rather than being dominated by errors from the measurement system. Therefore, MSA is critical for accurately assessing and improving process stability.

Certified Six Sigma Black Belt Exam Practice Test

Certified Six Sigma Black Belt Exam Practice Test

Free Certified Six Sigma Black Belt Basic Questions and Answers