Six Sigma methodology has been widely used as a necessary tool for the improvement of operations. Strong strategies have been used by many organizations, such as general electric, Motorola, Honeywell, and SONY. At the same time, the application and services companies, such as Morgan, American Express, Lloyd TSB bank, city and Zurich financial services. Now, Six Sigma has been developed from a simple tool in an integrated tool to measure the overall quality of an organization.
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