Drug abuse A survey was conducted in the United States and 10 countries of Western Europe to determine the percentage of teenagers who had used marijuana and other drugs. The results are summarized in the table. a) Create a scatterplot. b) What is the correlation between the percent of teens who have used marijuana and the percent who have used other drugs? c) Write a brief description of the association. d) Do these results confirm that marijuana is a gateway drug, that is, that marijuana use leads to the use of other drugs? Explain

Section 1: Introduction to Statistics Stat 2220, Espey ➢ Statistics: the science concerned with the collection, organization, and analysis of information ➢ Statistical literacy: having the skills to question and interpret statistics encountered in everyday life ➢ Unit: the thing being described by a set of data (ex: Clemson Student) ➢ Variable: Characteristic of the units that is measured ➢ Population of units: all units of interest (ex: All Clemson Students) ➢ Population: The variable measurements of the whole population of units ○ N = population size ○ Parameter: A number calculated to describe the populat is the truth that we want to find, but is usually unknown because most research does not or ca