Summary Introductory Statistics Quick Revision Guide | S&DS 1000 Yale | Formula Sheet, Key Concepts & Last-Minute Exam Checklist | 2026

S&DS 1000 Introductory Statistics 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 which-test-to-use decision 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, random variables, sampling, confidence intervals, hypothesis testing, chi-square, ANOVA, and regression. - Key concepts organized by the 13 S&DS 1000 chapters. - Which-test-to-use decision table — identify the correct statistical test from the question wording. - 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, inference, and regression 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 S&DS 1000 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.