![]() Sigma is a Greek symbol represented by “σ”. ![]() Six Sigma is a methodology focused on creating breakthrough improvements by managing variation and reducing defects in processes across the enterprise. unacceptable deviation from the mean or target, we can work towards systematically managing the variation to eliminate defects. If we can measure process variations that cause defects i.e. Mean is their expectation, and our target. Therefore they experience the variation and not the mean. It is important to recall that every customer always values consistent and predicable services and/or products with near zero defects. The central idea behind Six Sigma: If you can measure how many “defects” you have in a process, you can systematically figure out how to eliminate them and get as close to “zero defects” as possible and specifically it means a failure rate of 3.4 parts per million or 99.9997% perfect. The word Sigma is a statistical term that measures how far a given process deviates from perfection. ![]()
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