Author Archives: ethanrouen

Data Science as Detective Work

Each week Ethan Rouen, a student in the class, will post on a topic of his interest based on class lectures. Ethan is a Ph.D. student in accounting at Columbia Business School and a columnist for Fortune.com. With Andy Lehren and Steve Lohr speaking to the class this week, I finally have the opportunity to […]

The Nerdiest Detectives in the World

Each week Ethan Rouen, a student in the class, will post on a topic of his interest based on class lectures. Ethan is a Ph.D. student in accounting at Columbia Business School and a columnist for Fortune.com. “Feasibility,” “Restatement,” “Litigation,” “Where,” “Acquisitions,” “Technological,” “Update,” “Words,” “Considered,” “Pooling” Some investigators think those 10 words will help […]

R Package Cheesy Goodness

Each week Ethan Rouen, a student in the class, will post on a topic of his interest based on class lectures. Ethan is a Ph.D. student in accounting at Columbia Business School and a columnist for Fortune.com. Props to the professors for the timing of the Kaggle competition announcement on Wednesday night. I’m sure I wasn’t […]

Deep Thoughts with the Central Limit Theorem

Each week Ethan Rouen, a student in the class, will post on a topic of his interest based on class lectures. Ethan is a Ph.D. student in accounting at Columbia Business School and a columnist for Fortune.com. A wise man once said, “Oh, people can come up with statistics to prove anything. Fourteen percent of people […]