You cannot properly learn the methods of inferential statistics without first knowing the basics of probability. If you are unfamiliar with probability, be sure to read this chapter closely before proceeding to Chapter 5. If you are already familiar with probability, you may want to skim this chapter and review the definitions of the probability concepts used in subsequent chapters.

Five basic concepts form the basis for understanding probability. You need to learn these concepts before you can learn about the role that probability and probability distributions play in ...

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