Chapter 9: Review of Probability and Probabilistic Sampling
Probability Distributions and Density Functions
The Normal and t Distributions
The Usefulness of Theoretical Models
When Samples Surprise Us: Ordinary and Extraordinary Sampling Variability
Case 1: Sample Observations of a Categorical Variable
Case 2: Sample Observations of a Continuous Variable
Overview
The past three chapters have focused on probability—a subject that forms the crucial link between descriptive statistics and statistical inference. From the standpoint of statistical inference, probability theory provides a valuable framework for understanding the variability of probability-based samples. Before moving forward with inference, this short chapter reviews ...
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