{
  "citation": "Wooldridge, J. M. (2020). Introductory Econometrics: A Modern Approach, 7th edition. Boston: Cengage. Examples 15.1 and 15.5 (Mroz 1987, 'The Sensitivity of an Empirical Model of Married Women's Hours of Work', data set MROZ).",
  "deviation_evidence": null,
  "doi": null,
  "excerpt": "log(wage) = .048 + .061 educ (.400) (.031) n = 428",
  "independent": null,
  "item_set": null,
  "kind": "textbook",
  "known_deviation": null,
  "licence": "Copyright Cengage; cited, not reproduced.",
  "locator": "Wooldridge (2020), Example 15.5 'Return to Education for Working Women', the 2SLS equation, coefficient on educ",
  "metric": null,
  "n_items": null,
  "page": "511",
  "read_copy_sha256": "d4e2e31096d1e3ef19d9aa7f3d8d29a5dc11da66ecd8360ff195a462651d85df",
  "retrieved_at": "2026-10-15",
  "se": 0.031,
  "se_as_published": ".031",
  "source_id": "mroz_1987.ex15_5.paper",
  "tolerance_reason": null,
  "units": "log points of the hourly wage per year of schooling",
  "url": "https://www.cengage.com/c/introductory-econometrics-a-modern-approach-7e-wooldridge/9781337558860/",
  "value": 0.061,
  "value_as_published": ".061",
  "verified_by": "primary_source",
  "verified_note": "Read on 2026-10-15 from a copy of Chapter 15 of the 7th edition (Cengage, 2020) posted on a course page at huhuaping.com (64-page PDF of Chapters 15-16), with pdftotext and from the rendered page image. Example 15.5, printed page 511: 2SLS .061 educ (.031), with exper .044 (.013) and exper squared, n = 428, R-squared .136."
}