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Unformatted text preview: median. ..terms that are coming soon. These data are at times referred to as "free of assumptions" regarding their distribution. Parametric data on the other hand, interval and ratio, are measurement levels in which the data can measure mean, median, and mode and other tests about the population they came from. ....and this last point is important. ...they (interval and ratio) have a population upon which they came from. Take another look at the four levels of measurement and their examples and try to answer the question, could I get an average from this data? Is this data from a population I can measure and compare? Please see the post Levels of Measurement Summarized in <Course Materials> that provide more descriptions of the levels of measurement....
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 Spring '10
 Regis
 Statistics

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