Repository for EPSY 8251

Fall 2025

Course Materials

• Syllabus
• Textbook: Statistical Modeling and Computation for Educational Scientists
• CSV Data Files (ZIP File)
• Data Dictionaries
• R Scripts (ZIP File)

Assignments

• Assignment 1: Introduction to Statistical Computing [Closed]
• Assignment 2: Introduction to Regression [Closed]
• Assignment 3: Regression Inference [Closed]
• Assignment 4: Introduction to Multiple Regression
• Assignment 5: Categorical Predictors
• Assignment 6: Interaction Effects

Worksheets

• Using RStudio
  • Answer Key
  • When the page opens, right-click and “Save As…”. Make sure the extension is “.R”
• Learning dplyr
  • Answer Key
• Learning ggplot2
  • Answer Key