15PROBABILITY
The concept of probability is central to statistical reasoning. Even the most complicated statistical techniques and models usually have the ultimate goal of making a probabilistic statement about a phenomenon. In this chapter, I’ll use simple, everyday examples to illustrate this key idea in preparation for the remaining chapters. If you’re already familiar with the basics of probability and random variables and the associated terminology, you may want to skip ahead to Chapter 16, where R functionality begins to feature more prominently.
15.1 What Is a Probability?
A probability is a number that describes the “magnitude of chance” ...
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