Zach is a senior statistician with NORC at the University of Chicago, where he works on sample design, estimation, and data analysis for government and public interest surveys.
Zach contributes to weighting, total survey error analysis, small area estimation, imputation, and adaptive design for such surveys as the National Immunization Survey, the General Social Survey, the Survey of Doctorate Recipients, and Jewish community studies. Additionally, Zach’s expertise includes analyzing administrative data quality and combining data sources for evidence-building, topics on which he has published research in the Statistical Journal of the International Association of Official Statistics and the International Journal of Population Data Science. He has led development of tools to support researchers with evaluating data quality of non-survey data sources.
Zach further serves as an adjunct faculty member with Northwestern University's School of Professional Studies, teaching in the Public Policy and Administration program. He serves on the American Association for Public Opinion Research’s Standards Committee.
Appointments & Affiliations
Northwestern University, Master’s in Public Policy and Public Administration Program
AAPOR Standards Committee
Honors & Awards
Dissertation Fellow | 2016
U.S. Census Bureau
"Visual and Interactive Tools for Assessing Data Quality."
Journal Article | December 29, 2021
opens in new tab"Estimating County-Level Vaccination Coverage Using Small Area Estimation with the National Immunization Survey-Child."
Journal Article | December 10, 2020
opens in new tab"Managing Locating and Data Collection Interventions through Adaptive Survey Design."
Journal Article | August 12, 2019
opens in new tab"Constructing a Toolkit to Evaluate Quality of State and Local Administrative Data."
Journal Article | January 31, 2019
opens in new tab"Evaluating the Utility of a Commercial Data Source for Estimating Property Tax Amounts."
Journal Article | December 4, 2018
Report | November 30, 2018
opens in new tab"Uses of Alternative Data Sources for Public Health Statistics and Policymaking: Challenges and Opportunities."
Journal Article | August 30, 2018
opens in new tab"Inverse Sampling: Investigatng a Tool for Model Estimation with Complex Survey Data."
Journal Article | August 26, 2017