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Andrew Gelman

Andrew Gelman is Professor of Statistics and Political Science at Columbia University. His books include Bayesian Data Analysis, Teaching Statistics: A Bag of Tricks, and Red State, Blue State, Rich State, Poor State: Why Americans Vote the Way They Do. He also blogs at Statistical Modeling, Causal Inference, and Social Science.


A group seeking to ban affirmative action has sued Harvard for discriminating against Asian Americans. The core issues won't be resolved by statistics alone.

Andrew Gelman Daniel E. Ho Sharad Goel
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The truth about Obama’s victory wasn’t in the papers.

Andrew Gelman John Sides

Partisanship is not the only problem.

Andrew Gelman

In elections, what is certain is almost never new.

Andrew Gelman John Sides

Policymakers routinely escape punishment at the polls.

Andrew Gelman John Sides Sarah Binder