GERALD J. LANGLEY is a consultant with Associates in Process Improvement, a national consulting firm. Gerald Langley has been a statistician and manager at Hewlett Packard Corporation and consultant to a variety of industries on methods of improvement. KEVIN M. NOLAN is a consultant with Associates in Process Improvement, a national consulting firm. Kevin Nolan, a statistician, has assisted manufacturing, service, and healthcare organizations in accelerating their improvement in quality and productivity. CLIFFORD L. NORMAN is a consultant with Associates in Process Improvement, a national consulting firm. Clifford Norman, a Certified Quality Engineer, has over fifteen years of experience in implementing the quality process in various companies. LLOYD P. PROVOST is a consultant with Associates in Process Improvement, a national consulting firm. His consulting experience as a statistician includes planning, management systems, measurement, data analysis, and other improvement methods. THOMAS W. NOLAN is a consultant with Associates in Process Improvement, a national consulting firm. Nolan, who holds a doctorate in statistics, has consulted on quality to many different industries in the United States, Canada, and Europe.