What system did Walter Shewhart develop that is related to statistical methods?

Walter Shewhart developed the concept of Statistical Process Control (SPC), which is a method that utilizes statistical techniques to monitor and control a process. The primary objective of SPC is to ensure that the process operates at its full potential to produce a consistent product that meets specifications. Through the use of control charts, which Shewhart introduced, organizations can analyze variations in their processes and determine whether they are within acceptable limits or if there are signs of problems that need addressing.

Shewhart's work laid the foundation for future developments in quality control and continuous improvement methodologies. By focusing on variability and the ability to detect and eliminate causes of variation, SPC enables organizations to maintain control over their processes, leading to improved quality and efficiency. This system is widely implemented in various industries to monitor production processes and enhance quality assurance practices.

In contrast, while the other options mention important quality management concepts, they do not specifically focus on the statistical methods developed by Shewhart. Quality Assurance Systems encompass various practices aimed at ensuring product quality, Total Quality Management is a holistic approach focused on long-term success through customer satisfaction, and Continuous Improvement Models emphasize ongoing enhancements across processes. Still, none of these options are solely centered on the statistical techniques originating from Shewhart's work.