Parametric and Non-Parametric Data

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November 22, 2015








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For example, heights, weight, depth, amount of money, square footage are all forms of parametric data. These are all data with parameters. Interval and ratio measurements are considered parametric. Data is considered parametric if it has the following three assumptions: normality, equal variances, and independence...
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First, is the data obtained from a population that is considered normal? Second, the populations from which the data is obtained should have equal variances. The F-test can be used to test the hypothesis that the samples have been drawn from populations with the equal variances. And, third, the data should be measured on an interval scale (Eachus, 2000)...
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