Summary Data Analysis & Econometrics Quick Revision Guide | ECON 1117 Yale | Formula Sheet, Key Concepts & Last-Minute Exam Checklist | 2026

ECON 1117 Data Analysis & Econometrics Quick Revision Guide — the condensed, high-signal revision resource for the final 48 hours before your exam. This guide exists because the last two days before an exam are the highest-leverage study time — it delivers a complete formula sheet, chapter-by-chapter key concepts, a causal identification strategy table, and the top 10 exam traps that cost students the most points, all in one fast-reference document. WHAT'S INSIDE: - Complete formula sheet: descriptive statistics, probability, sampling, confidence intervals, hypothesis testing, regression, and causal inference. - Key concepts organized by the 14 ECON 1117 chapters. - Problem-type recognition table — identify the correct technique from the question wording. - Causal identification strategy table — RCT, IV, DiD, RDD with each method's key assumption. - The top 10 exam traps that cause most lost points, with how to avoid each. - A last-minute checklist organized by two days before, day before, exam morning, and during the exam. - Final reminders for descriptive, probability, regression, and causal questions. WHY THIS GUIDE IS DIFFERENT: - Condensed and high-signal — no filler, no repetition. - Written for the last-48-hours-before-exam study window. - Designed as a companion to the ECON 1117 Complete Study Guide and Practice Question Bank. Format: PDF, 30+ pages. Edition: 2026. This is an independent study resource. Not affiliated with or endorsed by Yale University.