Daily 23 - Apr 20

Class Performance

Students: 95 | Mean: 4.62 | Median: 4.5 | SD: 0.27

Scores ranged from 4 to 5 out of 5 points.

Score Distribution

Performance by Question

Questions

Q1: NLSYM — Education and Wages

Another year of education is associated with a 7.5% increase in wages, statistically significant at the 5% level.

  • Near-universal success — Almost everyone got both blanks correct.
  • “Schooling” / “earnings” — Accepted as equivalents.

Q2: Project STAR — Small, Test Scores, Large

Kindergartners assigned to a small class have test scores 14–16 points higher than students assigned to a large (or “regular”) class.

  • “Regular” for the comparison — Accepted, since the STAR comparison was the regular-size class.
  • “Achievement” / “scores” — Accepted equivalents for test scores.

Q3: MLDA — Turning 21 Causes Deaths

Turning 21 causes deaths from external (alcohol-related) causes to rise by 8 per 100,000.

  • Universal success — Every student named the cause and outcome correctly.
  • “Age 21” / “21st birthday” / “mortality” — All accepted.

Q4: Kentucky Worker’s Comp — WBA, Time Out of Work

Increasing the WBA (weekly benefit amount) by 65% caused time out of work to increase by 20%.

  • Writing “worker’s comp” — Half credit. Worker’s comp is the program/dataset; the variable raised by 65% is the WBA.
  • “Weekly benefit cap” / “WBA cap” — Full credit; the cap on the WBA is what was raised.
  • “Claim duration” / “injury duration” — Accepted for time out of work.

Q5: CPS 2024 Wage Gap

Wages are roughly 22% lower for women than for men, after controlling for age, education, demographics, and household characteristics.

  • 20–23% range — Accepted as approximately correct.
  • “Earnings” / “females” / “males” — All accepted equivalents.

Key Takeaways

Strengths: Five-paper recap mastered | Causal storytelling internalized | All five papers’ headline results clearly remembered.

Review:

  • Q4 specificity — The WBA (not “worker’s comp”) is the variable raised 65% in Meyer et al.
  • Project STAR setup — Small vs regular (or “large”) class is the comparison
  • CPS gender gap — ~22% lower wages for women than men, after controls