We seek to provide a unified characterization of Six Sigma by studying the -phenomenon from the perspectives of business economics, organizational theory, competitive strategy and industrial statistics, and we pinpoint its core methodological principles. We describe Six Sigma as a prescriptive framework for the routinization of incremental product and process innovation, organized as a decentralized project organization. The methodological basis of Six Sigma consists of principles borrowed from methodology for empirical inquiry, and facilitated by techniques from quality engineering, problem solving and marketing.
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