Lean Green Belt Six Sigma Exam Question and Answers | Project Management Certification 2026

Lean Green Belt Six Sigma Exam Question and Answers | Project Management Certification 2026 Ace your Six Sigma Green Belt certification exam with this ultimate Q&A practice video! Designed specifically for Green Belt exam prep, this video features 100 essential Six Sigma Green Belt questions and answers to test your knowledge and prepare you for success. Stop searching for Green Belt practice questions! We've compiled a comprehensive set of exam-style Q&A covering every phase of DMAIC and critical Six Sigma concepts. 00:00 What does DMAIC stand for? Define, Measure, Analyze, Improve, Control. 00:10 What is the statistical definition of Six Sigma? 3.4 defects per million opportunities (DPMO). 00:20 Who is responsible for project leadership in Six Sigma? The Green Belt or Black Belt. 00:30 What is a SIPOC diagram? A high-level process map showing Suppliers, Inputs, Process, Outputs, and Customers. 00:40 What is the Voice of the Customer (VOC)? The feedback or requirements provided by the customer regarding a product or service. 00:50 What is Critical to Quality (CTQ)? Specific quality requirements that are essential for customer satisfaction. 01:00 What is a Pareto Chart? A bar chart used to identify the vital few problems (80/20 rule). 01:10 What is a Fishbone Diagram? A tool used to brainstorm all potential causes of a specific problem (also called Ishikawa or Cause and Effect). 01:20 What is the purpose of a Gage R&R study? To assess the precision and consistency of a measurement system. 01:30 Define Value-Added activity. An activity that transforms the product or service in a way the customer is willing to pay for. 01:40 What is Muda? The Japanese term for waste. 01:50 Name the eight wastes (DOWNTIME). Defects, Overproduction, Waiting, Non-utilized talent, Transportation, Inventory, Motion, Extra-processing. 02:00 What is standard deviation? A measure of the amount of variation or dispersion in a set of values. 02:10 What is a Control Chart? A graph used to monitor process stability over time using control limits. 02:20 What is the difference between Specification Limits and Control Limits? Specification limits are set by the customer; control limits are calculated from process data. 02:30 What is the purpose of a Project Charter? To define the project scope, objectives, team, and timeline. 02:40 What is a Histogram? A chart that represents the frequency distribution of continuous data. 02:50 What is the purpose of Root Cause Analysis (RCA)? To identify the underlying reason for a problem to prevent recurrence. 03:00 What is a 5 Whys analysis? An iterative interrogative technique used to explore cause-and-effect relationships. 03:10 What is Hypothesis Testing? A statistical method used to make decisions about a population based on sample data. 03:20 What is a P-value? The probability that the observed results occurred by chance if the null hypothesis is true. 03:30 What is Null Hypothesis (H0)? The statement that there is no effect or no difference. 03:40 What is Alternative Hypothesis (Ha)? The statement that there is an effect or a significant difference. 03:50 What is Type I Error? Rejecting a true null hypothesis (False Positive). 04:00 What is Type II Error? Failing to reject a false null hypothesis (False Negative). 04:10 What is Correlation? A statistical measure that expresses the extent to which two variables are linearly related. 04:20 What is Regression Analysis? A statistical process for estimating the relationships among variables. 04:30 What is Design of Experiments (DOE)? A structured method to determine the relationship between factors affecting a process and its output. 04:40 What is Poka-Yoke? A Japanese term for mistake-proofing a process. 04:50 What is 5S? A workplace organization method: Sort, Set in order, Shine, Standardize, Sustain. 05:00 What is Kaizen? Continuous improvement involving all employees. 05:10 What is a Process Map? A visual representation of the steps in a process. 05:20 What is the Cost of Poor Quality (COPQ)? The costs associated with providing poor quality products or services. 05:30 What are the two types of data? Continuous (measurable) and Discrete (countable/attribute). 05:40 What is a Sample? A subset of the population used for analysis. 05:50 What is a Population? The entire group of items or data points under consideration. 06:00 What is Mean? The arithmetic average of a dataset. 06:10 What is Median? The middle value in an ordered dataset. 06:20 What is Mode? The most frequently occurring value in a dataset. 👍 If this Q&A video helps you prepare, please give it a like! 🔔 Subscribe for more targeted Six Sigma exam prep content and study resources! 💬 Share your exam tips or questions below! #SixSigma #GreenBelt #ExamPrep #SixSigmaCertification #DMAIC #QuestionsAndAnswers #PracticeQuestions #GreenBeltExam #SixSigmaTools #ProcessImprovement #QualityManagement #LeanSixSigma #CertificationPrep #StudyGuide #SixSigmaTraining #QAA