Chapter 8 Appendix — Data and build notes

8.1 ESS subset

  • File: ess.csv
  • Countries: GB, DE, FR
  • For variable descriptions, open the bundled HTML codebook (ESS-Codebook.html) in your browser.
  • Common missing-value codes: 66/77/88/99 or blank strings. All chapters use na_if() to drop them before analysis.

8.2 Extending the material

  • Swap dependent variables: pplhlp (people helpful) or pplfair (people fair) can replace ppltrst without changing structure.
  • Add country-level covariates by merging lookups (e.g., GDP or media freedom indices) before running multilevel models.
  • Convert interaction plots to ggplotly for live demos if desired.