Week 7 Notes - Course Introduction

Model Diagnostics & Spatial Autocorrelation

rendering issues

• Add progress = FALSE in each function call
• Set globally on the top of the doc

# Add this near the top of your .qmd after loading libraries
options(tigris_use_cache = TRUE)
options(tigris_progress = FALSE)  # Suppress tigris progress bars

• evaluation and echo

# eval = true, run the code; echo = true, show the result

regression evaluation

• good error is random

Moran’s I

• measure spatial autocorrelation
  • +1 shows that has positive correlation (cluster)
  • 0 random
  • -1 shows that has negative correlation (dispersion)

Neighbors

• Queen: share the same border and corner
• rook: share the same border