Quality control is a procedure or set of procedures formulated for the purpose of maintaining standards in manufactured products. This book presents a comprehensive overview of the important elements of quality control. It gives a contemporary account of methods used to design quality models. It is created to be used as a text for courses on quality control for students of industrial engineering at the advanced and undergraduate level. The book can also serve as a reference for researchers in related areas looking for a synopsis of the main concepts of quality control.