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15 Cards in this Set
- Front
- Back
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categorical data
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Labels or names used to identify an attribute of each element. Categorical data use either the nominal or ordinal scale of measurement and may be nonnumeric or numeric.
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categorical variable
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A variable with categorical data.
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census
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A survey to collect data on the entire population.
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cross-sectional data
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Data collected at the same or approximately the same point in time.
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data
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The facts and figures collected, analyzed, and summarized for presentation and interpretation.
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data mining
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The process of using procedures from statistics and computer science to extract useful information from extremely large databases.
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data set
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All the data collected in a particular study.
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descriptive statistics
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Tabular, graphical, and numerical summaries of data.
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elements
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The entities on which data are collected.
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interval scale
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The scale of measurement for a variable if the data demonstrate the properties of ordinal data and the interval between values is expressed in terms of a fixed unit of measure. Interval data are always numeric.
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nominal scale
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The scale of measurement for a variable when the data are labels or names used to identify an attribute of an element. Nominal data may be nonnumeric or numeric.
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observation
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The set of measurements obtained for a particular element.
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ordinal scale
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The scale of measurement for a variable if the data exhibit the properties of nominal data and the order or rank of the data is meaningful. Ordinal data may be nonnumeric or numeric.
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population
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The set of all elements of interest in a particular study. (2) The collection of all elements of interest.
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quantitative data
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Numeric values that indicate how much or how many of something. Quantitative data are obtained using either the interval or ratio scale of measurement.
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