Six Sigma is a data-driven, quality assurance method that organizations use to improve performance, increase profits, and decrease errors. The Six Sigma name and concept are rooted in statistics. On a bell curve, one Sigma represents a standard deviation from the mean. For a Six Sigma project, 99.9 percent of results must fall within six standard deviations from the mean, leaving a fraction of a percent of results that can fall outside of expected results. In other words, Six Sigma is a business strategy used to minimize error and improve profitability.

Several principles guide Six Sigma’s quality assurance method, including focusing on the customer, understanding and improving work processes, eliminating defects and problems, reducing waste, concentrating on value, collaborating with your team, and making your efforts systematic and scientific. 

This course will help you prepare for a certifying exam. These include: 1. Six Sigma Council 2. 6Sigma.us 3. International Association for Six Sigma (IASSC) 4. American Society for Quality