FSHN 101 Lecture Notes - Lecture 36: Bell Labs, Statistical Process Control, Walter A. Shewhart

• School: University of Illinois
• Department: Food Science and Human Nutrition
• Course: FSHN 101
• Professor: Bohn Dawn

Document Summary

Pre-industrial revolution: quality was controlled by individual craftsman. Craftsman was involved in all aspects of products life cycle. Concepts and methods of division of labor and mass production in american industrial sector. Work standards- amount of work completed in a certain amount of time. Incentive program awarded an employee with more money if produce above work standard. 1924: walter shewhart of bell labs introduces statistical process control in the form on control charts. Methods based on continual on line monitoring of process variation. Focus is on process control for end product quality. 1930s: dodge and romig of bell labs introduce double sampling methods. Developed by a lot by lot sampling inspection method for determining product suitability for shipment to customer. Methods based on probabilistic approach to prediction of the lot character based on sampling results. Focus on product control for end product quality. Statistically - based approach to quality and productivity improvement patterned after work of shewhart and dodge and.