Six Sigma is a business management plan designed to improve performance across all strategic business processes. Using a disciplined, measured approach, Six Sigma uses quantitative data to eliminate defects and strive for perfection.
- A business must produce no more than 3.4 defects per 1 million opportunities to achieve Six Sigma status. All improvements are geared toward reaching that goal.
- Six Sigma DMAIC is employed with existing processes. DMAIC stands for define, measure, analyze, improve and control. When designing new processes, the strategy used is Six Sigma DMADV, which stands for define, measure, analyze, design and verify.
- Six Sigma leadership has six levels, starting at Yellow Belt and working up to Green Belt, Black Belt, Master Black Belt, Champions and finally Executive Leadership.
- Motorola first developed and implemented Six Sigma in 1986. Following the strategy allowed Motorola to save millions of dollars and improve customer satisfaction. The success inspired other companies, including General Electric, to use the Six Sigma plan.
- Sigma is a statistical term that refers to measuring the deviation from a process mean. When plotted on a graph, Six Sigma strives to achieve no more than six standard deviations between the process mean and the nearest specified limit, whether upper or lower.
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