The 2009 National Survey on Drug Use and Health Selected

question 14

Multiple Choice

The 2009 National Survey on Drug Use and Health selected a random sample of U.S.college students and asked them if they had ever used illicit drugs.Approximately 23% of the students surveyed reported using illicit drugs in the past year.The variable in this study is:

• A) the percentage of students who reported using illicit drugs.
• B) whether a student used illicit drugs.
• C) whether a college student responded to the survey.
• D) the number of college students who use illicit drugs.