Richard Berk
Professor of Statistics and Criminology
University of Pennsylvania

berkr@wharton.upenn.edu

CV (Updated 10/1)

Outside of a dog, a book is man's best friend. Inside of a dog it's too dark to read.
Groucho Marx

Some Recent Working Papers

Statistical Inference After Model Selection
When Second Best Is Good Enough: A Comparison Between A True Experiment and a Regression Discontinuity Quasi-Experiment
The Dynamics of Crime Regimes
Estimating the Homeless Population in Los Angeles: An Application of Cost-Sensitive Stochastic Gradient Boosting
Profiling Consumer Safety Violations and Violators
The Role of Race in Forecasts of Violent Crime
Policing the Homeless: An Evaluation of Efforts to Reduce Homeless-Related Crime

Statistical Learning From A Regression Perspective (Springer, 2008) --- Answers to the Exercises by Chapter

Answers provided by Brian Kriegler are in .pdf files. The R code listings are also .pdf files. For many of the exercises there is no narrowly right or wrong answer. But there are always better and worse answers. Also, the answers provided are pretty much bare bones and often can be made much longer and richer.

Chapter 1 Solutions
Chapter 2 Solutions
Chapter 3 Solutions
Chapter 4 Solutions
Chapter 5 Solutions
Chapter 6 Solutions
Chapter 7 Solutions

Chapter 1 R Code
Chapter 2 R Code
Chapter 3 R Code
Chapter 4 R Code
Chapter 5 R Code
Chapter 6 R Code
Chapter 7 R Code