Week 8 - Nonlinear Regression
Content for week of Monday, October 18, 2021–Monday, October 25, 2021
Overview
Let’s make regressions faaaancy, with three new friends: polynomials, logarithms, and interactions!
Reading Guide
Chapter 8: Nonlinear Regression Functions
SW 8.1 A General Strategy for Modeling Nonlinear Regression Functons
Key takeaway here - thnk about the economic theory and its application to determine the best approach to modeling!
SW 8.2 Nonlinear Functions of a Single Independent Variable
Polynomials and logs. Note that this section includes only 3 ways of setting up equations: level-level, log-log, log-level. We’ll also cover level-log, because, why not?
SW 8.3 Interactions Between Independent Variables
Three types of interactions you should know:
- Binary-binary
- Continuous-binary
- Contnuous-continuous
Videos
Warning! The interactions example I work through is … uninspired. I clearly should not have taken on baseball. I regret it. 😳 😬 Also, the reason why there are only 3 race/ethnicity categories in the MLB is because in 1993, all players fell into only those three groups!