Lean Six Sigma Yellow Belt Course

Lesson 1 • Core Philosophy and Principles

Explains the dual focus on waste elimination and variation reduction as complementary goals. Connects philosophy to measurable business outcomes students will pursue.

Lesson 2 • Business Case for LSS

Quantifies cost of poor quality, customer satisfaction impact, and competitive advantage from LSS. Prepares students to justify improvement initiatives to stakeholders.

Lesson 3 • Belt Levels and Organizational Roles

Maps White, Yellow, Green, Black, and Master Black Belt responsibilities within a deployment structure. Clarifies Yellow Belt's specific contribution to team-based projects.

Lesson 1 • Measure Phase Essentials

Introduces baseline data collection, process mapping, and initial capability assessment as Measure outputs. Connects measurement rigor to credible analysis in the next phase.

Lesson 2 • DMAIC Overview and Logic

Presents DMAIC as a hypothesis-driven cycle that replaces guesswork with evidence. Shows how each phase gates the next, preventing premature solutions.

Lesson 3 • Analyze, Improve, and Control Essentials

Surveys root cause identification, solution selection, and control plan creation as the final three phases. Provides a complete mental model before deep dives in later chapters.

Lesson 1 • Writing Effective Problem Statements

Guides students through the five elements of a strong problem statement: what, where, when, magnitude, and impact. Prevents scope creep and solution bias from the start.

Lesson 2 • Building the Project Charter

Covers each charter section—business case, goal statement, scope, team, and timeline—and how they interlock. Students draft a charter ready for sponsor review.

Lesson 3 • Stakeholder Analysis and Communication

Maps stakeholder influence and interest to tailor engagement strategies throughout the project. Ensures Yellow Belts can maintain sponsor support and team alignment.

Lesson 4 • Capturing the Voice of the Customer

Teaches methods for gathering, segmenting, and translating customer feedback into measurable requirements. Links VOC directly to project goal-setting in the charter.

Lesson 1 • Process Mapping for Measurement

Uses detailed process maps to identify measurement points, handoffs, and potential defect locations. Connects mapping to targeted data collection rather than broad data gathering.

Lesson 2 • Baseline Metrics and Sigma Calculation

Calculates defects per million opportunities, yield, and sigma level to quantify current performance. Establishes the numeric baseline against which improvement will be measured.

Lesson 3 • Types of Data and Measurement Scales

Distinguishes continuous from discrete data and nominal, ordinal, interval, and ratio scales. Correct data type selection drives appropriate tool choices throughout the project.

Lesson 4 • Introduction to Measurement System Analysis

Introduces gage repeatability and reproducibility concepts to assess whether the measurement system is trustworthy. Prevents drawing false conclusions from unreliable data.

Lesson 1 • Graphical Analysis Tools

Teaches histograms, box plots, run charts, and scatter diagrams to visualize data distributions and trends. Visual tools reveal patterns that summary statistics alone can obscure.

Lesson 2 • Normal Distribution and Probability Basics

Explains the normal curve, empirical rule, and z-scores as foundations for capability and hypothesis testing. Builds intuition for how variation relates to defect probability.

Lesson 3 • Pareto Analysis and Prioritization

Applies the 80/20 principle through Pareto charts to focus improvement effort on the vital few causes. Directly supports root cause prioritization in the Analyze phase.

Lesson 1 • Data-Driven Cause Verification

Introduces stratification, scatter plots, and basic hypothesis framing to confirm suspected root causes with evidence. Separates confirmed causes from unverified opinions.

Lesson 2 • Selecting and Prioritizing Root Causes

Applies impact-effort matrices and multi-voting to narrow the verified cause list to actionable priorities. Ensures team resources target the highest-leverage root causes.

Lesson 3 • Cause-and-Effect Diagram

Constructs fishbone diagrams using the 6M categories to brainstorm and organize potential causes. Provides a structured team tool that prevents overlooking major cause categories.

Lesson 4 • Five Whys Analysis

Applies iterative questioning to drill from symptom to root cause without jumping to solutions. Teaches when to stop asking and how to validate the identified root cause.

Lesson 1 • The Eight Wastes of Lean

Defines DOWNTIME wastes—Defects, Overproduction, Waiting, Non-utilized talent, Transportation, Inventory, Motion, Extra-processing—with workplace examples. Builds a waste-spotting mindset applicable to any industry.

Lesson 2 • 5S Workplace Organization

Applies Sort, Set in Order, Shine, Standardize, and Sustain to create a stable, visual workplace. A well-implemented 5S foundation enables all other Lean improvements.

Lesson 3 • Value Stream Mapping

Teaches current-state and future-state VSM to visualize material and information flow across the entire value stream. Reveals systemic waste invisible in isolated process maps.

Lesson 4 • Visual Management and Mistake-Proofing

Covers visual controls, andon signals, and poka-yoke devices that make process status and errors immediately obvious. Embeds quality and transparency into the process itself.

Lesson 1 • Project Closure and Knowledge Transfer

Covers final results documentation, lessons-learned capture, and formal handoff to process owners. Ensures improvement gains survive personnel changes and project team disbanding.

Lesson 2 • Statistical Process Control Basics

Introduces control charts—I-MR and p-charts—to distinguish common cause from special cause variation. Enables teams to detect process shifts before they produce defects.

Lesson 3 • Solution Generation and Selection

Applies brainstorming, benchmarking, and solution selection matrices to generate and choose the best countermeasures. Balances impact, feasibility, and risk before committing resources.

Lesson 4 • Control Plans and Standard Work

Builds control plans that specify what to monitor, how often, and what to do when limits are breached. Standard work documents lock in the improved method for all operators.