A handbook in the truest sense of the word the first edition of the Operations Research Calculations Handbook quickly became an indispensible resource. While other books available tend to give detailed information about specific topics this one contains comprehensive information and results useful for real-world problem solving. Reflecting the breadth and depth of growth in the field the scope of the second edition has been expanded to cover several additional topics. And as with the first edition it focuses on presenting analytical results and formulas that allow quick calculations and provide understanding of system models. See what‘s in the Second Edition: New chapters include Order Statistics Traffic Flow and Delay and Heuristic Search Methods New sections include Distance Norms Hyper-Exponential and Hypo-Exponential Distributions Newly derived formulas and an expanded reference list Like its predecessor the new edition of this handbook presents the analytical results and formulas needed in the scientific applications of operations research and management. It continues to provide quick calculations and insight into system performance. Presenting practical results and formulas without derivations the material is organized by topic and offered in a concise format that allows ready-access to a wide range of results in a single volume. The field of operations research encompasses a growing number of technical areas and uses analyses and techniques from a variety of branches of mathematics statistics and other scientific disciplines. And as the field continues to grow there is an even greater need for key results to be summarized and easily accessible in one reference volume. Yet many of the important results and formulas are widely scattered among different textbooks and journals and are often hard to find in t