{
  "citation": "linearmodels 7.0: the reference specification of angrist_lavy_1999 tab4_c1 (infer.iv_2sls, figure 'coef.classize') 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": "angrist_lavy_1999: Table IV (2SLS estimates for 1991, fifth graders), column (1), reading comprehension, full sample, row 'Class size'",
  "metric": null,
  "n_items": null,
  "page": null,
  "read_copy_sha256": null,
  "retrieved_at": "2026-10-15",
  "se": 0.04166708823732179,
  "se_as_published": null,
  "source_id": "angrist_lavy_1999.tab4_c1.software",
  "tolerance_reason": null,
  "units": null,
  "url": "https://pypi.org/project/linearmodels/7.0/",
  "value": -0.15847765494294208,
  "value_as_published": null,
  "verified_by": "software_run",
  "verified_note": "IV2SLS(dependent=avgverb, exog=[const, tipuach], endog=['classize'], instruments=['func1']).fit(cov_type='clustered', clusters=schlcode, debiased=True) on final5 (the file pinned at sha256 bf443edee9033926b4e74dc2c17a98b04405b899735bf4c372e0e6d468431a54, after its 17 declared transforms); n_obs = 2019, n_clusters = 1002. The tool infer.iv_2sls (magi_infer, numpy) does not call linearmodels. Written by scripts/paper_repro_reference.py."
}