Texas State University
McCoy College of Business.Research Insights

Zewei Lin

Assistant Professor of Information Systems and Analytics, Department of Information Systems and Analytics Faculty profile

1 item

July–September 2025

Illustration of an analyst holding a magnifying glass over a scatter plot of residuals, surrounded by smaller charts of dot patterns, histograms, and curves pinned to the wall.
Strategy3 min read

A Better Way to Check Regression Models That Predict Counts and Categories

Analysts who model yes-or-no outcomes, ratings, or counts have lacked good tools to check whether the model fits. A new framework replaces the usual single-number residual with a function, and yields plots that reveal missing variables, interactions, and other misspecifications.

Zewei Lin

One research-backed idea, every Thursday

Short summaries of new faculty work, with what it means for managers.