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Probability Methods for Cost Uncertainty Analysis

Probability Methods for Cost Uncertainty Analysis
Author: Paul R. Garvey
Publisher: CRC Press
Total Pages: 526
Release: 2016-01-06
Genre: Mathematics
ISBN: 148221976X

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Probability Methods for Cost Uncertainty Analysis: A Systems Engineering Perspective, Second Edition gives you a thorough grounding in the analytical methods needed for modeling and measuring uncertainty in the cost of engineering systems. This includes the treatment of correlation between the cost of system elements, how to present the analysis to


Probability Methods for Cost Uncertainty Analysis

Probability Methods for Cost Uncertainty Analysis
Author: Paul R. Garvey
Publisher:
Total Pages:
Release: 2016
Genre: Electronic books
ISBN: 9780429132865

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A careful blend of theory and practice, this book presents a comprehensive approach to assessing the impact of unplanned events on the cost of engineering complex systems. It illustrates how probability theory is applied to model, measure, and manage risk in the cost of a systems engineering project. The book contains numerous mathematical and prof


Subjective Probability Distribution Elicitation in Cost Risk Analysis

Subjective Probability Distribution Elicitation in Cost Risk Analysis
Author: Lionel A. Galway
Publisher: Rand Corporation
Total Pages: 43
Release: 2007
Genre: Business & Economics
ISBN: 0833040111

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A cost estimate for a project such as the acquisition of a new aircraft or satellite system carries with it an inherent probability that the actual cost will exceed the estimate-that changes in requirements, technology, the economic environment, and a multitude of other factors that may occur over the life of the project will change the final cost. One major approach to cost risk analysis-the evaluating and quantifying of the uncertainty of a cost estimate-has been probabilistic: expressing the uncertainty in a cost estimate as a probability distribution over a range of potential costs. Cost analysts in industry and government and researchers in statistics and management have often proposed that, to get probability distributions for platforms using new and untried technologies, expert judgment should be tapped and subjective probability distributions elicited from the experts to represent cost uncertainty. This technical report reviews procedures for eliciting subjective probability distributions in cost risk analysis, both in the cost risk field and in other disciplines in which elicitation has been a topic of research-primarily, statistics and psychology. Because of a lack of empirical work in elicitation, especially in cost risk, the author also interviewed a number of senior people in the cost risk community, who gave insight into the practices of the field. This report should be of interest to cost analysis professionals who wish to quantify uncertainty when using expert opinions in cost risk analysis.


An Investigation of the Accuracy of Heuristic Methods for Cost Uncertainty Analysis

An Investigation of the Accuracy of Heuristic Methods for Cost Uncertainty Analysis
Author: Wendell Phillips Simpson
Publisher:
Total Pages: 32
Release: 1994
Genre: Economics
ISBN:

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Cost uncertainty analysis has received a great deal of attention over the last several years. The purpose of a cost uncertainty analysis is to identify the cost and schedule implications associated with program uncertainties. Common methods for uncertainty analysis characterize the possible cost and schedule outcomes of a project using a probability density function (pdf). Heuristic methods have been proposed for uncertainty analysis that assume the shape of the total cost pdf is either normally or lognormally distributed. While experienced analysts feel these distributions provide reasonable approximations, little evidence exists to either confirm or refute these presumptions. An experiment is conducted in which number of cost elements, the degree of skewness of the cost elements, and the degree of correlation between cost elements are varied systematically. The resulting total cost pdfs are compared to the heuristic distributions using goodness of fit tests. The results show that the normal distribution provides an excellent approximation for the simulated distributions. Guidelines are offered that help the cost analyst determine whether these heuristics ought to be applied in a cost uncertainty analysis. Cost analysis, Cost uncertainty analysis.


COST UNCERTAINTY ANALYSIS.

COST UNCERTAINTY ANALYSIS.
Author: Frank J. Husic
Publisher:
Total Pages: 23
Release: 1968
Genre:
ISBN:

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An important aspect of cost research is the measurement of the uncertainty inherent in the projection of system cost. Only recently have approaches utilizing such tools as statistical decision theory and probability theory been formulated. The study described here explores and evaluates three such techniques: (a) The derivation of moments technique employs equations for deriving the moments and distributions for cost elements and aggregations. (b) The Monte Carlo technique is a simulation routine. (c) The symmetric approximation is a special case of the derivation of moments technique.


Cost Analysis and Estimating

Cost Analysis and Estimating
Author: Willis R., Jr. Greer
Publisher: Springer Science & Business Media
Total Pages: 302
Release: 2012-12-06
Genre: Mathematics
ISBN: 1461209951

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Changes in production processes reflect the technological advances permeat ing our products and services. U. S. industry is modernizing and automating. In parallel, direct labor is fading as the primary cost driver while engineering and technology related cost elements loom ever larger. Traditional, labor-based ap proaches to estimating costs are losing their relevance. Old methods require aug mentation with new estimating tools and techniques that capture the emerging environment. This volume represents one of many responses to this challenge by the cost analysis profession. The Institute of Cost Analysis (lCA) is dedicated to improving the effective ness of cost and price analysis and enhancing the professional competence of its members. We encourage and promote exchange of research findings and appli cations between the academic community and cost professionals in industry and government. The 1990 National Meeting in Los Angeles, jointly spo~sored by ICA and the National Estimating Society (NES), provides such a forum. Presen tations will focus on new and improved tools and techniques of cost analysis. This volume is the second in a series. The first was produced in conjunction with the 1989 National Meeting of ICA/NES in Washington, D.C. The articles in this volume, all refereed, were selected from about 100 submitted for presen tation at the Los Angeles meeting.


Science and Judgment in Risk Assessment

Science and Judgment in Risk Assessment
Author: National Research Council
Publisher: National Academies Press
Total Pages: 668
Release: 1994-01-01
Genre: Science
ISBN: 030904894X

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The public depends on competent risk assessment from the federal government and the scientific community to grapple with the threat of pollution. When risk reports turn out to be overblownâ€"or when risks are overlookedâ€"public skepticism abounds. This comprehensive and readable book explores how the U.S. Environmental Protection Agency (EPA) can improve its risk assessment practices, with a focus on implementation of the 1990 Clean Air Act Amendments. With a wealth of detailed information, pertinent examples, and revealing analysis, the volume explores the "default option" and other basic concepts. It offers two views of EPA operations: The first examines how EPA currently assesses exposure to hazardous air pollutants, evaluates the toxicity of a substance, and characterizes the risk to the public. The second, more holistic, view explores how EPA can improve in several critical areas of risk assessment by focusing on cross-cutting themes and incorporating more scientific judgment. This comprehensive volume will be important to the EPA and other agencies, risk managers, environmental advocates, scientists, faculty, students, and concerned individuals.


Cost Estimation

Cost Estimation
Author: Gregory K. Mislick
Publisher: John Wiley & Sons
Total Pages: 342
Release: 2015-04-27
Genre: Business & Economics
ISBN: 1118802330

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Presents an accessible approach to the cost estimation tools, concepts, and techniques needed to support analytical and cost decisions Written with an easy-to-understand approach, Cost Estimation: Methods and Tools provides comprehensive coverage of the quantitative techniques needed by professional cost estimators and for those wanting to learn about this vibrant career field. Featuring the underlying mathematical and analytical principles of cost estimation, the book focuses on the tools and methods used to predict the research and development, production, and operating and support costs for successful cost estimation in industrial, business, and manufacturing processes. The book begins with a detailed historical perspective and key terms of the cost estimating field in order to develop the necessary background prior to implementing the presented quantitative methods. The book proceeds to fundamental cost estimation methods utilized in the field of cost estimation, including working with inflation indices, regression analysis, learning curves, analogies, cost factors, and wrap rates. With a step-by-step introduction to the practicality of cost estimation and the available resources for obtaining relevant data, Cost Estimation: Methods and Tools also features: Various cost estimating tools, concepts, and techniques needed to support business decisions Multiple questions at the end of each chapter to help readers obtain a deeper understanding of the discussed methods and techniques An overview of the software used in cost estimation, as well as an introduction to the application of risk and uncertainty analysis A Foreword from Dr. Douglas A. Brook, a professor in the Graduate School of Business and Public Policy at the Naval Postgraduate School, who spent many years working in the Department of Defense acquisition environment Cost Estimation: Methods and Tools is an excellent reference for academics and practitioners in decision science, operations research, operations management, business, and systems and industrial engineering, as well as a useful guide in support of professional cost estimation training and certification courses for practitioners. The book is also appropriate for graduate-level courses in operations research, operations management, engineering economics, and manufacturing and/or production processes.


Strategic Cost Fundamentals

Strategic Cost Fundamentals
Author: Robert Creese
Publisher: Springer Nature
Total Pages: 251
Release: 2022-06-01
Genre: Technology & Engineering
ISBN: 3031793943

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This book is designed to introduce designers, engineers, technologists, estimators, project managers, and financial analysts as well as students in engineering and business to strategic cost tools for project cost evaluations. The three main sections are as follows. (1) Cost Relationships, Financial Statements, and Performance Measures—This section describes the relationships between cash flows and profits; the relationships between financial statements and the Purcell Diagram; and the issues of cost estimating, time-based breakeven analysis and time-based earned schedule. (2) Tools for Economic Evaluations—This section considers the basic mathematical relations used behind the economic equations and factors; discrete and continuous interest; depreciation terms and methods; and the Present Value of Principal Approach for evaluating loans. (3) Methods for Project Evaluation and Risk Analysis—This section considers payback periods, present worth analysis, return on investment, internal rate of return, benefit/cost ratios and positive-negative project balances; risk techniques of sensitivity analysis, optimistic-pessimistic analysis, discrete probability examples, and continuous probability models using the normal and triangular distributions.


GAO Cost Estimating and Assessment Guide

GAO Cost Estimating and Assessment Guide
Author: Barry Leonard
Publisher: DIANE Publishing
Total Pages: 438
Release: 2009-11
Genre:
ISBN: 143791702X

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To use public funds effectively, the gov¿t. must meet the demands of today's changing world by employing effective mgmt. practices and processes, including the measurement of gov¿t. program performance. Legislators, gov¿t. officials, and the public want to know whether gov¿t. programs are achieving their goals and what their costs are. To make those evaluations, reliable cost information is required and fed. standards have been issued for the cost accounting that is needed to prepare that information. This Cost Guide has been developed in order to establish a consistent methodology that is based on best practices and that can be used across the fed. gov¿t. for developing, managing, and evaluating capital program cost estimates. Illustrations.