AP Statistics

Unit 6: Inference for Categorical Data: Proportions

Ask anything about Unit 6: Inference for Categorical Data: Proportions (AP Statistics): a concept you are stuck on, or a problem to work through step by step.

Ask any maths question, or type an equation like x² − 4x + 3 = 0

Enter sends, Shift + Enter adds a line. Type / for a fraction and ^ for a power, or press + for the maths keyboard, a photo scan and more.

AP Statistics

Unit 6: Inference for Categorical Data: Proportions

12–15% of exam score

Where you are No tests yet

A timed sectional mock on this unit

Confidence intervals and significance tests for one proportion and for the difference of two proportions, and the two types of error.

Key formula

\hat{p} \pm z^* \sqrt{\frac{\hat{p}(1 - \hat{p})}{n}}

What this unit covers

Confidence intervals for proportions
Significance tests for proportions
Type I and Type II errors
Two-sample proportions

Other units in AP Statistics

Unit 1: Exploring One-Variable Data
Unit 2: Exploring Two-Variable Data
Unit 3: Collecting Data
Unit 4: Probability, Random Variables, and Probability Distributions
Unit 5: Sampling Distributions
Unit 7: Inference for Quantitative Data: Means
Unit 8: Inference for Categorical Data: Chi-Square
Unit 9: Inference for Quantitative Data: Slopes