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Question: Consider the following examples of populations, together with the variable/characteristic measured on each population unit.

(a) All undergraduate students currently enrolled at PSU. Variable: major.

(b) All campus restaurants. Variable: seating capacity.

(c) All books in Penn State libraries. Variable: frequency of check-out.

(d) All steel cylinders made in a given month. Variable: diameter.

For each of the above examples, describe the statistical population, state whether the variable of interest is quantitative or qualitative, and specify another variable that could be measured on the population units.

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