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Donsig Jang
Director, Statistics
Donsig Jang is director of statistics with more than 15 years of experience in survey sampling and statistical research. During that time, he has directed and implemented the statistical applications required by many Mathematica projects. For example, Jang has been the task leader on all statistical tasks for the Scientists and Engineers Statistical Data System (SESTAT) project since he joined Mathematica in 1996.
The SESTAT database integrates data collected through three national sample surveys supported by the National Science Foundation (NSF): the National Survey of College Graduates (NSCG), the Survey of Doctorate Recipients (SDR), and the National Survey of Recent College Graduates (NSRCG). For that project, Jang has led all activities needed for statistical support of the SESTAT system, including developing SESTAT variance estimation methodologies, constructing longitudinal weights for longitudinal data analysis, preparing response rate calculation guidelines, providing imputation guidelines, developing overlap specifications for the integration of the three independent surveys into SESTAT, and providing general statistical consultations to NSF and data collection contractors.
He has also served as the task leader responsible for all statistical activities required for the 2003, 2006, 2008, and 2010 NSRCG, which collects information from individuals who recently obtained a bachelor’s or master’s degree in a science or engineering field using a mixed mode of data collection (a combination of mail, web, and telephone surveys).
Jang is currently a member of the Statistical Evaluation Committee for the 2010 NSCG Redesign. The Census Bureau will conduct NSCG in 2010 and beyond, as it has done for more than two decades. The 2010 NSCG Redesign involves many statistically challenging issues because it will use American Community Survey (ACS) data for its sampling frame. As a committee member, Jang has provided statistical advice to the 2010 NSCG planning team. Since 2007, he has been an adjunct professor in the Department of Statistics at George Mason University; he also has served as an adjunct faculty member in the Department of Statistics at George Washington University. He has a Ph.D. in statistics from Texas A&M University.
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- Areas of Expertise
- Key Projects
- Professional Activities
- Publications
- Survey sampling
- Statistical research
- Member, American Association for Public Opinion Research, American Statistical Association, Government Statistics Section of ASA, Survey Research Methods Section of ASA, Social Statistics Section of ASA, and Washington Statistical Society Chapter of ASA
- Article reviewer, Journal of Statistical Planning and Inferences, Journal of Official Statistics, Statistics in Medicine, and Survey Methodology
- Grant proposal reviewer, National Science Foundation
- "The 2009 Morris Hansen Lecture: The Care, Feeding, and Training of Survey Statisticians." Journal of Official Statistics (September 2010)
- "Use of Within-Primary-Sample-Unit Variances to Assess the Stability of a Standard Design-Based Variance Estimator." Survey Methodology (December 2009)
- "A Simulation Study to Compare Weighting Methods for Survey Nonresponses in the National Survey of Recent College Graduates" In 2009 Proceedings of the Section on Survey Research Methods of the American Statistical Association (2009)