Define, recognize examples of, and differentiate between four types of data: nominal or categorical, ordinal, interval scale, and ratio scale.
Answer: Nominal - numbers are identifiers with no real meaning, Ordinal - numbers take on meaning and a bigger number means more of some property than a smaller number but the exact differences are meaningless. On an interval scale the differences between numbers are meaningful but the value of zero has no meaning. On a ratio scale the numbers include a meaningful zero point, the total absence of a measured property.
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