Lean Six Sigma Green Belt Certification Questions with Verified Solutions

Lean Six Sigma Green Belt Certification Questions with Verified Solutions What is Six Sigma? is both a methodology for process improvement and a statistical concept that seeks to define the variation inherent in any process. The overarching premise of Six Sigma is that variation in a process leads to opportunities for error; opportunities for error then lead to risks for product defects. Decision-making with Six Sigma The six sigma method lets organizations identify problems, validate assumptions, brainstorm solutions, and plan for implementation to avoid unintended consequences. What is 6σ as a statistical concept? is a statistical representation of what many experts call a "perfect" process. Technically, in a six sigma process, there are only 3.4 defects/1,000,000 opportunities, or 99.99966% of the products from six sigma are without defect. Common six sigma principles - Customer-focused improvement - Value streams - Continuous process improvement - Variation - Removing waste - Equipping people - Controlling the process Value stream is the sequence of all items, events, and people required to produce an end result Jidoka a principle that creates control of defects inside a business. Jidoka demands that a process stop as soon as errors are detected instead of identifying defects at the end of the production line and attempting to trace errors back to a source. Principles of Lean Six Sigma - Defining customer values - Identifying the value stream for customer needs and desires - Identifying waste in the process - Creation of a continuous process flow - Continually working to reduce the number of steps and time it takes to reach customer satisfaction Rummler-Brache's Nine Box Model - Improvement-planning - Definition - Analysis and Design - Implementation - Management of process - Processes are turned over to daily teams Scrum is a project development method specific to Agile programming endeavors in technical departments. When to use six sigma - When facing the unknown - When problems are widespread and not defined - When solving complex problems - When costs are closely tied to processes Other formal quality or process improvement programs - Lean Process Management - Total Quality Management - Business Process Reengineering