GMS 401 Lecture 7: Week 7
Document Summary
A process used to monitor standards, make measurements, and take corrective action as a product or service is being produced. Is concerned with statistical evaluation of the product in the production process: to distinguish assignable from natural variation, to reduce variation, and to stabilize the process. Control charts: graphic presentation of process data over time, with predetermined control limits. It is a means of ensuring that an operation is producing at the quality level expected. Effective statistical process control requires the following planning steps: define the quality characteristics important to customers and how each is measured, for each characteristics. Plan how inspection is to be done, how much to expect. How inspection is to be done: this is usually technical and engineering knowledge, how much to inspect. When the cost is associated with passing defective item. Is quite low no inspection is needed.