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Stratton Hall, 103
Phone: +1-508-831-5539
Fax: +1-508-831-5824

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Balgobin Nandram

Professor Nandram has been doing research at the interface of survey sampling and Bayesian statistics for over 25 years. He specializes in hierarchical Bayesian models and predictive inference of finite population parameters. The common theme is hierarchical Bayesian modeling for the analysis of data from small areas in finite populations, and their implementations using Markov chain Monte Carlo methods. He has particular expertise building hierarchical Bayesian models that incorporate multinomial-Dirichlet structures.

As an expert, Bal has given workshops on Bayesian statistics and Bayesian computations to several governmental agencies, including the National Center for Health Statistics (NCHS), the Census Bureau, the Bureau of Labor Statistics, the National Agricultural Statistics Service (NASS), and the USDA. In 2006, WPI won the prestigious Statistical Partnerships among Academe, Industry, and Government (SPAIG) award from the American Statistical Association (ASA) through outstanding collaboration of Bal and his students with the NCHS.

For the past 10 years, Bal's research efforts have been focused on nonignorable nonresponse for continuous data, as well as categorical data that uses multinomial-Dirichlet models. Specifically, he has been studying data for small areas from the National Health Interview Survey and the National Crime Survey, providing an expansion model that incorporates different degrees of nonignorability over different small areas. Most recently, Bal has been studying the nonignorable nonresponse problem for continuous data, which includes a component for selection bias.

Bal has written extensively for theory & methods journals, methods & applications journals, and statistical journals. Bal is also an associate editor for five journals.

Research Interests

  • Bayesian Statistics
  • Survey sampling
  • Small Area Estimation
  • Categorical Data Analysis
  • Bayesian Computation


  • BS, University of Guyana, 1977
  • MS, Imperial College, 1981
  • PhD, University of Iowa, 1989
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