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Ratio scalesA measurement scale that has all the characteristics of interval measurement scales as well as a true zero point as the origin.
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Ratio scalesVariables measured at the ratio level are called ratio variables. Most physical quantities, such as mass, length or energy are measured on ratio scales so temperature is measured in Kelvins, that is, relative to absolute zero. The central tendency of a variable measured at the ratio level can be represented by its mode, its median, its arithmetic m [..]
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