4 Basic Reliability Mathematics Statistics
4.1 Introduction
Statistics is the process of collecting, analyzing, organizing, and interpreting data. Data are used to support decisions about a population of interest. Data can be collected about a full population, but more often, the collected data are a sample from the population of interest. A set of observations from a distribution of an r.v. is called a sample. The number of observations in a sample is called the sample size. In the framework of classical statistics, a sample is usually composed of exchangeable, independently, and identically distributed (i.i.d.) observations. From a practical point of view, this assumption means that elements of a sample are ...
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