Topic: Unit 3: Inference for Categorical Data: Proportions

Counting Successes and Failures Correctly

Confidence Intervals for Differences in Observational Studies

Conditions When the Large Counts Check Fails

Common Mistakes in Two-Proportion Tests

Common Mistakes in Choosing and Stating Chi-Square Tests

Chi-Square Test With a Random Experiment

Categorical Variables and Two-Way Tables

Calculating the Pooled Standard Error

Why We Never Accept the Null Hypothesis

What a Sampling Distribution of p-hat Is