Professor: Michael Wallace | Term: Fall 2025

Lecture 1

The 4 assignments in this course (which are not graded) give opportunity to analyze a real-world dataset (Stanford Open Policing Project) using R.

Question

Why study stats?

  1. To be a statistician.
  • Problem solving: This reminds me of a puzzle.
  • Variety: Theory, application, anything in between.
  • Utility: Useful to almost everyone.
  • Coolness: You will be cool at parties.
  1. To be a user of statistics.
  • Science: Want to know if you’ve done an experiment properly? Will need statistics.
  • Industry: Does our new product work better? Why are we losing customers?
  • Spare time: Can I play the stock market?
  • Being informed on issues: Should guns be regulated?
  1. To improve critical, analytical, and communication skills.
  • Learn to ask the right questions.
  • Understand the importance of precision, in words and measurements.

Key features of STAT231:

  • The language of statistics
  • Understanding what data can and can’t tell us
  • Methods of estimation and analaysis
  • Principles over proofs (this is a STAT not a MATH course)