Overview

HW 3

📚 HW Available Now
Due: Tues, Feb 25th (by 4pm)

Weekly Plan: Categorical Predictors

Tuesday Feb 18th

• Update 📚 github assignment from last week to get notebooks 04_models and 05_models

• Multiple regression with statsmodels

Wednesday Feb 18th

• Update 📚 github assignment from last week to get notebooks 06_models and 07_models

• Multi-collinearity

• 3+ level categorical predictors

Resources (new)

• Vanhove, J. (2021). Collinearity isn’t a disease that needs curing. Meta-Psychology, 5.

• Coding Systems for Categorical Variables conceptual overview, but examples are in R

• Contrasts in StatsModels Shorter Python version of the guide above

• How to use different coding schemes in formulas

Readings (from last week)

• Data Analysis: A Model Comparison Approach

  • Chapter 2: Error & Parameter Estimates (from last week)

  • Chapter 4: Statistical Inferences About Parameter Values (from last week)

  • Chapter 5: Simple Regression

• Regression and Other Stories

  • Chapter 3: Math and Probability Basics Review

  • Chapter 4: Statistical Inference

  • Chapter 6: Regression Background

  • Chapter 8: Fitting Regression Models

  • 10 quick tips to improve your regression modeling

• The Truth about Linear Regression