American Society for Quality

The American Society for Quality (ASQ) has been the leading membership-based quality improvement organization in the U.S. for more than 50 years. Its members have initiated most of the quality methods used throughout the world, including statistical process control, quality cost measurement and control, total quality management, failure analysis, and zero defects. The site offers considerable information on state of the art best practices in performance measurement, Six Sigma, and many other process improvement approaches.