Methods used to evaluate R&R studies have changed since this book was first published. This second edition provides instruction that reflects current manufacturing practices. The relationship of the two basic measurement capability indices and process capability has been clarified in this new edition. This development supports the concept that measurement evaluation should be performed in conjunction with process capability assessments in order to fully judge the status and priority of measurement systems. Since the last edition, using software to analyze statistics has become a more common practice. Barrentine demonstrates examples of the proper methods for applying statistical software to R&R studies.