Question: As part of a project in a statistics class, students report the last four digits of their Social Security numbers, and the average (mean) of

As part of a project in a statistics class, students report the last four digits of their Social Security numbers, and the average (mean) of those digits is computed to be 4.7.

Identify the level of measurement of the data as nominal, ordinal, interval, or ratio. Also, explain what is wrong with the given calculation.

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