Research

My research is mainly in sequential analysis, especially sequential estimation. A large part of my work looks at the first- and second-order asymptotic behavior of sequential procedures, with applications to fixed-width and fixed-accuracy confidence procedures, minimum-risk estimation, changepoint detection, and related problems. I also participate in consulting and interdisciplinary collaborative research in areas such as linguistics and health care, contributing statistical modeling, sample size calculation, power analysis, and scientific writing.

Selected Presentations

Quantitative Findings of AI Sentiment in the Classroom
Invited Speaker, AALAC Workshop on GenAI and Data Analysis, Middletown, CT — July 2026

Sequential Estimation and Boundary Correction for the Overlap Coefficient
Invited Speaker, International Workshop on Sequential Methodology, Washington, DC — June 2026

Sequential Analysis in the Undergraduate Classroom
Panel organizer and speaker, International Workshop on Sequential Methodology, Washington, DC — June 2026

Diverse Drivers of Change in a Language Contact Context: Puerto Rican Rhotics in Lorain, Ohio
Co-author, 29th Conference of Spanish in the US & 14th Conference of Spanish in Contact with Other Languages (SIUS25), San Antonio, TX — April 2025

Latent Class and Latent Transition Analysis
Session organizer and speaker, Women in Statistics and Data Science, St. Louis, MO — October 2022

A Review of Missing Data Approaches and Practices in Large Nationally Representative Survey Databases
Co-author, Joint Statistical Meetings, Washington, DC — August 2022

Selected Publications

  • Beaton, M. E., & Wang, Z. (2025). Generational change in the conditioning of coda /r/ manner of articulation in Lorain Puerto Rican Spanish. Studies in Hispanic and Lusophone Linguistics, 18(2), 261–290.
  • Hu, J., Alanazi, I., & Wang, Z. (2024). Estimating a function of the scale parameter in a gamma distribution with bounded variance. Sequential Analysis, 43(3), 301–316.
  • Mukhopadhyay, N., Hu, J., & Wang, Z. (2024). Second-order asymptotics for comparing treatment means from purely sequential estimation strategies under possible outlying observations. Communications in Statistics—Simulation and Computation, 53(3), 1330–1355.