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Unformatted text preview: Chapter 1: Data and Statistics Key Terms: Statistics- the science of collecting, analyzing, presenting, and interpreting data. Data- the facts and figures collected, analyzed, and summarized for presentation and interpretation. Data Set- all the data collected in a particular study Elements- the entities on which data are collected (sometimes elements are called units, individuals, subjects depending on the framework) Variable- a characteristic of interest for the elements Observation- the set of measurements obtained for a particular element Nominal Scale- the scale of measurement for a variable when the data are labels or names, and is used to identify an attribute of an element Ordinal Scale- the scale of measurement for a variable if the data demonstrate the properties of nominal data and the order or rank of the data is meaningful. Ordinal data may be nonnumeric or numeric as well....
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This note was uploaded on 02/06/2012 for the course STAT 225 taught by Professor Martin during the Spring '08 term at Purdue University.
- Spring '08