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Unformatted text preview: 1. A consumer magazine article titled ”How Safe is the Air in Airplanes” reports that the air quality, as quantified by the degree of staleness, was measured on 175 domestic flights. (a) Identify the population of units, the statistical population, and the sample. (b) Identify the variable of interest. (c) Is the variable of interest quantitative or qualitative? Is the variable of interest univariate of multivariate? 2. Consider the following examples of specific populations of units, together with the variable/characteristic measured on each unit. (a) All students currently enrolled at Penn State; major type. (b) All campus restaurants; seating capacity. (c) All books in Penn State libraries; frequency of check-out. (d) All steel cylinders manufactured in a given month; diameter of the cylinder. For each example: 1) describe the statistical population, 2) specify whether the variable of interest is quantitative or qualitative, and 3) specify another variable that could be measured on the population units....
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This note was uploaded on 01/11/2012 for the course STAT 401 taught by Professor Akritas during the Fall '00 term at Penn State.
- Fall '00