Monitoring and Adjustment of Trended Processes

摘要: Although in this book we have focused on the statistical process control when quality characteristics are form of attribute data, for effective analysis and improvement, accurate measurements can be very useful. In fact, traditional X-bar R-chart widely used industry based variable characteristics. Standard techniques such as capability variability reduction through design experiments found various texts hence will not discussed here. On other hand, techniques, especially use chart monitoring, usually assumption that is stable with no significant trend.