![]() We specifically discuss 6 definitions of "Sigma", ending with the most relevant definition which is related to the DMAIC Method of Problem Solving. The various definitions of Six Sigma is explained in this 5:42 video. This is true because variation, which invites defects and errors, continues to thrive in an environment where no standard is followed.Īn important note: The concept of Positive Variance is an important but not discussed topic in Lean Manufacturing – but a well-rounded and good understanding of Standard Work requires understanding Positive Variance. Where there is no standard, there is no Kaizen. When the process is improved, then the standard is updated. So, at each improved process, that becomes the new standard. The uphill picture represents improvement. ![]() The ball represents the process we’re trying to improve. ![]() Pictorially, a standard is a wedge in this diagram:
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