The Normal Distribution, Revisited

This study guide covers the normal distribution, including its properties (symmetry, unimodal), key parameters (mean (μ) and standard deviation (σ)), and the Empirical Rule (68-95-99.7). It also explains z-scores, percentiles, and conditions for normality. Practice problems and solutions are provided, along with exam tips focusing on interpreting results and showing work. The guide emphasizes the importance of the normal distribution in AP Statistics, particularly in sampling distributions and hypothesis testing.