This book discusses various forms of uncertainty that can arise in the manufacturing and service industries. Uncertainty can be found in a variety of areas (measurements, processes, analysis, data, information, persons, etc.) and, if not managed properly, can have a significant impact on the quality and safety of products and services. It is evident that any decision-making process for providing a good and safe product/service will strongly rely on knowledge concerning these uncertainties and their qualifications. This book clarifies all of these uncertainties, explains how to measure and analyze them, and offers advice for the industrial decision-making process. As such, the book is dedicated to all quality and safety professionals in the industry.