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7.2 - Discussion: Six SigmaDiscussWhat is Six Sigma and why is it important to businesses?In the Bulletin of Engineering, Lidija BARJAKTAROVIĆ and Dejan JEČMENICA define Six Sigma as “a statistical measure of realization of the process or product - Sigma is a sign of the standard deviation” and they describe it by writing “The essence of Six Sigma is that things should not be done with hard work, but smartly” (2011). Six Sigma is important to business because “with successful performance of the previously mentioned, companies achieve significant savings, retain satisfied clients, win new markets and create a good reputation and guaranteed quality of services / products” (Barjaktarovic & Jecmenica, 2011). Is Six Sigma a replacement for ISO 9000 Quality Management System?Six Sigma is not a replacement for the ISO 9000 quality system. ISO 9000 is a written set of standards which originated in the European Union, and have now been adopted by the United States along with about 100 other nations (Collier & Evans, 2015, pg. 327)