Rockville Institute Affiliates in
Sample Design & Estimation

J. Michael Brick, PhD
Graham Kalton, PhD
David Marker, PhD
Leyla Mohadjer, PhD
David Morganstein, MA

J. Michael Brick, PhD, is a senior statistician with special expertise in sample design and estimation for large surveys, the theory and practice of telephone surveys, survey quality control and the techniques of total quality management, nonresponse and bias evaluation, and survey methodology. Dr. Brick has contributed to the statistical and substantive aspects of numerous studies and to statistical methodology research in several areas, including education, transportation, and health studies. Dr. Brick is a Fellow of the American Statistical Association, an elected member of the International Statistical Institute, and a research professor in the Joint Program in Survey Methodology at the University of Maryland.
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Graham Kalton, PhD, is a senior statistician. He has served as a research scientist in the Survey Research Center of the University of Michigan and served a term as chairman of the Department of Biostatistics. Dr. Kalton has conducted research on many aspects of survey methodology and has been a consultant on a number of Federal statistical programs. He served on the Committee for National Statistics (CNSTAT) of the National Academy of Sciences for 6 years and has served on several CNSTAT panels. In addition, he has been involved with many international statistical activities and has served as president of the International Association of Survey Statisticians. Dr. Kalton is a Fellow of the American Statistical Association and a National Associate of the National Academies.
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David Marker, PhD, is a senior statistician with experience in quality control and improvement, survey research, sampling, survey evaluation, data analysis, imputation, modeling, and small area estimation. He has worked on studies in the area of quality control and improvement for the U.S. Department of Education, the Energy Information Administration, and the U.S. Environmental Protection Agency. He has also worked on other studies in the fields of health, housing, energy, social services, transportation, terrorism, and the environment, as well as in the commercial sector. Dr. Marker is an internationally recognized consultant in total quality management, having been invited to conduct training sessions for the Swedish, Norwegian, and Finnish governments on improving the quality of their data collection activities. He is also a member of the Board of Directors of the American Statistical Association and Chair of its Scientific and Public Affairs Advisory Committee.
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Leyla Mohadjer, PhD, a senior statistician, has special areas of expertise in sample design, estimation, analysis of variance, and regression models for survey data. She has directed the sampling and estimation for large-scale projects such as the National Health and Nutrition Examination Survey. She has been responsible for sample design and selection, sample weighting, estimation, disclosure risk limitation, and nonresponse bias analysis. Dr. Mohadjer has contributed to the development of regression models for WesVar, which is software for the analysis of data from complex sample surveys. She served as editor for the newsletter of the International Association of Sampling Statisticians.
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David Morganstein, MA, is a senior statistician with special areas of expertise in the design and application of sample surveys and systems of evaluation, quality control, statistical analysis, and estimation and quantification. He was co-developer of WesVar, which is software for estimating sampling errors from complex sample designs. Mr. Morganstein has worked with more than 50 organizations in North America and overseas in the teaching and use of statistical methods for quality assurance and improvement. Mr. Morganstein is a Fellow of the American Statistical Association and has been active in this and other statistical associations; he has presented workshops and held several appointed roles, serving as chairperson of various committees and as a member of the board of directors. He is an elected member of the International Statistical Institute and an instructor in the Joint Program for Survey Methods at the University of Maryland.
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