Six sigma is a quality control system that has been used in industry for decades. It was originally developed by Motorola in the 1980s.
The six sigma methodology focuses on reducing errors as much as possible by focusing on the root cause of defects, improving processes with statistical methods and reducing variation.
Six Sigma is a process improvement methodology that focuses on defect reduction and process optimization through statistical analysis. The goal of the Six Sigma methodology is to get the customer to accept almost perfect products or services without any defects or errors.
Six Sigma is a set of tools and techniques aimed at eliminating defects from manufacturing and business processes, while increasing quality and productivity.