Chapter 3
Random Variables and Probability Distributions
3.1 Concept of a Random Variable
Statistics is concerned with making inferences about populations and population characteristics. Experiments are conducted with results that are subject to chance. The testing of a number of electronic components is an example of a statistical experiment, a term that is used to describe any process by which several chance observations are generated. It is often important to allocate a numerical description to the outcome. For example, the sample space giving a detailed description of each possible outcome when three electronic components are tested may be written
where N denotes nondefective and D denotes defective. One is naturally concerned with the ...
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