AP Statistics CRAM – Chi-Square Tests & Regression

Review Chi-Square tests and linear regression inference for the AP Statistics exam. This cram session breaks down Units 8 and 9, covering goodness of fit, association, homogeneity tests, and regression slope inference with real examples and calculator walkthroughs. Perfect for AP Stats students preparing for exam day. You'll learn how to identify test types, set up hypotheses, calculate test statistics, and interpret computer output for both categorical data analysis and regression problems. ⏱️ TIMESTAMPS: 0:00 Cram Session Introduction 0:32 Curriculum Completion Overview 1:36 Recording and Promo Notes 2:09 AP Exam Giveaway Details 3:45 Q&A Feature Transition 4:47 Upcoming Events Preview 6:19 Chi-Square Distribution Basics 8:22 Categorical Data Recap 10:28 Degrees of Freedom Explained 12:38 Distribution Differences 15:32 Test Statistic Positivity 18:06 Multiple Categories Expansion 19:09 Types of Chi-Square Tests 22:16 Test for Association 24:56 Test for Homogeneity 28:02 Test Identification and Hypotheses 30:38 Calculator Procedures 34:24 Chi-Square Statistic Formula 35:57 Skittles Example Analysis 41:17 Calculator Results and Conclusion 43:23 Linear Regression T-Tests 45:58 Computer Output Interpretation 48:48 R-Squared Explanation 52:28 Sample Slope and P-Value 56:41 T-Interval Construction 1:00:52 Key Takeaways Summary 1:03:00 Upcoming Trivia and Events 📊 WHAT YOU'LL LEARN: • Chi-Square distribution and degrees of freedom • Goodness of fit, association, and homogeneity tests • Setting up hypotheses and checking conditions • Calculating and interpreting Chi-Square test statistics • Linear regression t-tests and slope inference • Reading computer output and understanding p-values • Confidence intervals for regression slopes 👍 SUBSCRIBE for more AP Statistics review sessions and exam prep! 📚 STUDY AP STATS WITH FIVEABLE: Study guides, practice questions, and exam prep for AP Statistics. 📖 Study Guides: https://fiveable.me/ap-stats ✏️ Practice Questions: https://fiveable.me/guided-practice/a... #APStatistics #APStats #APExamPrep