{
  "citation": "Wooldridge, J. M. Introductory Econometrics: A Modern Approach (edition not confirmed). Mason, OH: South-Western Cengage. Example 14.1 (Effect of job training on firm scrap rates), Table 14.1.",
  "deviation_evidence": "Recorded before this track's software-reference run and before any dry run on this target; from the source's status: the textbook was not read and no reproduction of its printed Example 14.1 output could be opened (a Regensburg exercise sheet that reprints Table 14.1 now answers 404; only a search engine's summary of it was seen, which gives grant -0.252 (0.151) and grant_1 -0.422 (0.210), n = 162, the figures research-papers.md section 3.21 records). The printed cells are therefore 'unverified': recorded and counted in replication fidelity, non-required on T1.",
  "doi": null,
  "excerpt": "grant −.252 (.151)",
  "independent": null,
  "item_set": null,
  "kind": "textbook",
  "known_deviation": "unverified",
  "licence": "Copyright Cengage; cited, not reproduced.",
  "locator": "Example 14.1 / Table 14.1 (edition not confirmed; fixed effects estimation, dependent variable log(scrap)), row 'grant'",
  "metric": null,
  "n_items": null,
  "page": "not read",
  "read_copy_sha256": null,
  "retrieved_at": "2026-10-15",
  "se": 0.151,
  "se_as_published": ".151",
  "source_id": "wooldridge_jtrain.ex14_1_grant.paper",
  "tolerance_reason": null,
  "units": "log points of the scrap rate",
  "url": "https://www.cengage.com/c/introductory-econometrics-a-modern-approach-7e-wooldridge/",
  "value": -0.252,
  "value_as_published": "−.252",
  "verified_by": "unverified",
  "verified_note": "Not verified against the book or a readable reproduction (2026-10-15). The figures are those of research-papers.md section 3.21 and agree with a search engine's summary of a University of Regensburg exercise sheet (WOE_ws19_bl7.pdf) that reprints Table 14.1; that sheet now returns 404 and no archived copy exists. Data fact checked before any estimate: 162 firm-years (54 firms x 1987-1989) are complete on lscrap, grant, grant_1, d88 and d89."
}