Six -Sigma is a business management strategy originally developed by Motorola. It enjoys widespread application in many sectors of industry. Six Sigma seeks to improve the quality of process outputs by identifying and removing the causes of defects (errors) and variability in business processes. It uses a set of quality management methods, including statistical methods, and creates a special infrastructure of people within the organization. Each Six Sigma project carried out within an organization follows a defined sequence of steps and has quantified financial targets (cost reduction or profit increase).