Introduction to Quality Control

adjustment analyzing assignable causes calculated carried cause-and-effect diagrams check sheets complaints consumers control limits control lines correlation cost customers dards decide design of experiment dispersion eliminate engineers equipment error example factory Figure fraction defective frequency distributions graphs histogram important investigated Japan Japanese machine means ment new-product development number of defectives obtained organization Pareto diagrams Pareto principle PDCA performed plans plotted possible prepared problems process analysis process average process capability process capability index process control promotion QC circle activities QC process chart QC teams quality assurance quality characteristics quality standards raw material recurrence prevention reliability responsibility revised sampling inspection sampling method scatter diagrams section managers statistical methods statistical quality control statistical tools Step stratified subgroup Table taking action targets technical testing tion top management total quality control trol type I error values workers workplace