{
  "citation": "statsmodels 0.15.0: the reference specification of stock_watson_caschool ch5_str (infer.ols, figure 'coef.str') on an independent code path",
  "deviation_evidence": null,
  "doi": null,
  "excerpt": null,
  "independent": true,
  "item_set": null,
  "kind": "software",
  "known_deviation": null,
  "licence": null,
  "locator": "stock_watson_caschool: Chapter 5, the heteroskedasticity-robust California class-size regression TestScore = b0 + b1 STR (the equation reporting the intercept and the STR coefficient with their standard errors; equation number not confirmed), coefficient on STR",
  "metric": null,
  "n_items": null,
  "page": null,
  "read_copy_sha256": null,
  "retrieved_at": "2026-10-15",
  "se": 0.5194892447934006,
  "se_as_published": null,
  "source_id": "stock_watson_caschool.ch5_str.software",
  "tolerance_reason": null,
  "units": null,
  "url": "https://pypi.org/project/statsmodels/0.15.0/",
  "value": -2.279808287023492,
  "value_as_published": null,
  "verified_by": "software_run",
  "verified_note": "sm.OLS(testscr, add_constant(['str'])).fit(cov_type='HC1') on caschool (the file pinned at sha256 644e606cd8ff21557375a091f744f623323bb84de99da616923a97942e4fe54b); n_obs = 420. The tool infer.ols (magi_infer, numpy) does not call statsmodels. Written by scripts/paper_repro_reference.py."
}