The Vice Chancellor of a major university was concerned about alcohol abuse on her campus and wanted to find out the proportion of students at her university who visited the campus bar on the weekend before the final exam period.Her advisor took a random sample of 250 students.
-The portion of students in the sample who visited the campus bar on the weekend before the final exam period is an example of
A) a discrete random variable.
B) a parameter.
C) a statistic.
D) a categorical random variable.

Question

Quizplus · Accepted Answer

The portion of students in the sample who visited the campus bar on the weekend before the final exam period is a statistic, which is a numerical summary of a sample. It is not a parameter, which is a numerical summary of a population, since the entire population of students at the university was not surveyed. It is also not a discrete random variable or a categorical random variable, since it is a proportion (i.e. a continuous variable between 0 and 1) rather than a count or categorical variable.

The Vice Chancellor of a Major University Was Concerned About