explain the different types of scales?
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There are four major scales (or types) of measurement of variables: nominal, ordinal, interval and ratio. The scale of measurement depends on the variable itself.
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There are 4 scales of measurement, namely Nominal, Ordinal, Interval and Ratio, all variables fall in one of these scales. Understanding the mathematical properties and assigning proper scale to the variables is important because they determine which mathematical operations are allowed.
Data can be classified as being on one of four scales: nominal, ordinal, interval or ratio. Each level of measurement has some important properties that are useful to know. For example, only the ratio scale has meaningful zeros. A pie chart displays groups of nominal variables (i.e. categories).
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