Specification Limits are derived from the customer requirements, and they specify the minimum and maximum acceptable limits of a process.ДЇor instance in a car manufacturing system the desired average length (Mean length) of car door can be 1.37185 meter. LSL and USL stand for вЂњLower Specification LimitвЂќ and вЂњUpper Specification LimitвЂќ respectively. Six Sigma stands for 6 standard deviations (6Пѓ) between avarage and acceptable limits Obviously 7 or more Пѓ processes are even better than a 6Пѓ (Six Sigma) process, and yet throughout the evaluation and history of Six Sigma process, the practitioners gained the belief that a 6Пѓ process is good enough to be reliable in almost all major situations except some systems whose defects can cause unrepairable consequences. This is the reason why a 6Пѓ (Six Sigma) process performs better than 1Пѓ, 2Пѓ, 3Пѓ, 4Пѓ, 5Пѓ processes. The more number of standard deviations between process average and acceptable process limits fits, the less likely that the process performs beyond the acceptable process limits, and it causes a defect. Standard Deviation (also known as Sigma or Пѓ) determines the spread around this mean/central tendency. What is Sigma and Why is it Six Sigma? Mean is the arithmetic average of a process data set.Д¬entral tendency is the tendency of data to be around this mean. Your Sample Six Sigma Certification Test Questions.Recommend International Six Sigma InstituteВ™ To Friends.Shareable Digital Badge And Six Sigma Certifications Validation Registry (NEW).Our Official Recognition and Industry Clients.Your Blog (US Army Personnel Selected Six Sigma InstituteВ™).International Organization for Project Management (IO4PMВ™).International DevOps Certification AcademyВ™.Register Your Six Sigma Certification Program.Certified Six Sigma Yellow Belt (CSSYBВ™).Certified Six Sigma Deployment Leader (CSSDLВ™).Certified Six Sigma Master Black Belt (CSSMBBВ™).Certified Six Sigma Black Belt (CSSBBВ™).

Certified Six Sigma Green Belt (CSSGBВ™).

Sigma math