Chapter 1
Review of Basic Statistics
1.1 What Is Statistics?
This chapter is a review of basic statistics. It begins with a discussion of the nature of data, variables, and statistical analysis. Then, in view of the fact that this book is mainly for a second course on statistics, the chapter proceeds with a few nonelementary items.
1.1.1 Data Are Observations
Data result from the observation of one or more variables. In the context of statistics, a variable represents a characteristic or property that can be observed or measured. Variables may may be observed on a number of occasions, or for a number of individuals (or for a number of individuals on a number of occasions).
1.1.2 Statistics Are Descriptions; Statistics Is Methods
Statistics ( ...
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