Statistical Quality Control deals, primarily, with various types of Shewhart control charts and with various types of scientific acceptance sampling systems and procedures. These are simple but powerful techniques, widely used in various industries and in many countries throughout the world to improve product and services quality and to reduce costs. The most effective use of these techniques depend upon their being adequately understood by production, inspection, engineering and quality management personnel. Hence, the object has been to write this book for immediate use by all these groups. The aim has been to give just enough theory to provide the framework of practical working rules so as to enable the user to recognize the limitations of the methods alongside their manifold utility. A distinct feature of this book is the use of descriptions and analysis of actual cases some of which have also been reported from time to time in industrial journals and magazines. An additional unique feature of this book is the solution of large number of fundamental and practical problems, under the heading Problems And Solutions towards the end of each chapter.