Jill DeMatteis

Vice President


Jill DeMatteis, PhD, has nearly 30 years of experience in survey statistics, including sample design and estimation. Her areas of expertise include address-based sampling, coverage and nonresponse error, and sample design and estimation for longitudinal surveys. Prior to joining Westat, DeMatteis was a mathematical statistician at the Bureau of Labor Statistics.

DeMatteis is a Fellow of the American Statistical Association (ASA) and an Elected Member of the International Statistical Institute. She has held many positions in the American Association for Public Opinion Research (AAPOR) and in the ASA, including as President of the Washington Statistical Society, Chair of both the Survey Research Methods Section and the Government Statistics Section, and Co-Chair of the Joint AAPOR/ASA Task Force on Data Falsification. DeMatteis is also an Associate Research Professor in the Joint Program in Survey Methodology at the University of Maryland.

In recognition of her contributions to the field, DeMatteis has been named a Westat Senior Statistical Fellow and serves on the Statistical Fellows Committee, which provides consultation on important survey statistics issues and addresses recent advances in applied statistics.


  • PhD, Statistics, American University
  • MS, Statistics, Miami University
  • BA, Mathematics and Economics, Ashland College


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