Difference between revisions of "Página de pruebas 3"
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Revision as of 23:13, 24 November 2020
Values have any meaningful order | Distance between values is defined | Mathematical operations make sense
(Values can be used to perform mathematical operations) |
There is a meaning ful zero-point | Values can be used to perform statistical computations | Example | |||||||||||||||||||||||||||||||||||||||||
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Comparison operators | Addition and subtrac tion | Multiplica tion and division | "Counts", aka, "Fre quency of Distribu tion" | Mode | Median | Mean | Stn | |||||||||||||||||||||||||||||||||||||||
Nominal | Values serve only as labels |
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For an «outlook» attribute from weather data, potential values could be "sunny", "overcast", and "rainy". | |||||||||||||||||||||||||||||||||||||||||||
Ordinal | Distinction between nominal and ordinal not always clear (e.g., attribute "outlook") |
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A «temperature» attribute in weather data with potential values fo: "hot" > "warm" > "cool" | |||||||||||||||||||||||||||||||||||||||||||
Interval |
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a «Temperature» attribute composed by numeric measures of such property | ||||||||||||||||||||||||||||||||||||||||||||
Ratio |
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The «weight» (e.g., in pounds)
Other examples: gross sales of a company, the income of a company, etc. |