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Statistical Methods for Testing and Evaluating Defense Systems: Interim Report Contents PREFACE vii EXECUTIVE SUMMARY 1 1 INTRODUCTION 7 Study Context, 7 Panel Objectives, 9 Statistics and Information Management in Defense Testing, 10 This Report and Future Work, 13 2 USE OF EXPERIMENTAL DESIGN IN OPERATIONAL TESTING 15 Case Study #1: Apache Longbow Helicopter, 16 Case Study #2: ATACMS/BAT System, 19 Future Work, 23 3 TESTING OF SOFTWARE-INTENSIVE SYSTEMS 24 Role for Statistical Methods, 25 Activities to Date, 26 Future Work, 27 4 SYSTEM RELIABILITY, AVAILABILITY, AND MAINTAINABILITY 28 Reliability, Availability, and Maintainability Testing and Evaluation in the Military Services, 29 Variability in Reliability, Availability, and Maintainability Policy and Practice, 30 Industrial (Nonmilitary) Standards, 31 Future Work, 32
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Statistical Methods for Testing and Evaluating Defense Systems: Interim Report 5 USE OF MODELING AND SIMULATION IN OPERATIONAL TESTING 33 Scope, Procedures, and Progress to Date, 34 Concerns, 35 Future Work, 39 6 EFFORTS TOWARD A TAXONOMIC STRUCTURE OF DOD SYSTEMS FOR OPERATIONAL TESTING 41 Preliminary Work Toward a Taxonomic Structure, 41 Future Work, 46 APPENDICES A The Organizational Structure of Defense Acquisition 49 B A Short History of Experimental Design, with Commentary for Operational Testing 55 C Selecting a Small Number of Operational Test Environments 62 D Individuals Consulted 72 E DoD and the Army Test and Evaluation Organization 75 REFERENCES 77 BIOGRAPHICAL SKETCHES OF PANEL MEMBERS AND STAFF 81