This handbook is designed to help candidates preparing for the ASQ Six Sigma Green Belt certification exam. Meant for those who already understand the basic concepts of reducing variation and improving processes, it also serves as a helpful reference to the appropriate materials needed to conduct successful Green Belt projects. The layout of the handbook is mapped to the 2022 version of ASQ’s Body of Knowledge (BoK). This revised edition includes new information about: • SMART goals, key process indicators, Takt time, just-in-time processes, and spaghetti diagrams • The Kano model, risk management, business continuity planning, SWOT analysis, and RACI charts • Data collection plans and quality checks • Gap analysis, 5 Whys analysis, and fault tree analysis • Maintaining quality improvements • Document control, audits, training plans, the PDCA cycle, Andon, and Jidoka system