Capability is concerned with characterizing what a process will produce in the future, and readers will learn how to make those predictions. This discussion of capability goes beyond mere computations to illustrate the concepts, the pitfalls, and the appropriate uses of capability indexes for both predictable and unpredictable processes. Examples using data from real-world processes make the ideas clear and easy to grasp. In this popular book Dr. Wheeler has provided practical guidance, based on sound theory, to a perennial problem faced by professionals working in Continual Improvement. The second edition was prepared after The Process Evaluation Handbook was written. Together, the two books make these powerful tools accessible to all readers. In the new edition Chapter 5 was simplified, Chapter 8 was substantially changed, Chapter 9 was reorganized and now includes additional material. More tables are included and exercises, a glossary, and an index have been added.