Consider the following examples of populations, together with the variable/characteristic measured on each population unit. a. All undergraduate engineering students enrolled at school. Variable: Major b. All books in the school Library. Variable: Frequency of check-out c. All steel cylinders made in a given month. Variable: diameter For each of the above examples, classify the variable of interest as either qualitative or quantitative and determine the corresponding level of measurement. Also, determine another variable that can be determined or measured from the population units.

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