The side-by-side boxplot shows the percent of adult residents who smoke in each state, categorized by region of the country (Midwest, Northeast, South, or West).


1. In general, which region seems to have the highest percent of smokers?
Region


2. In which region is the state with the highest percent of smokers?


3. Which region has the greatest variability?


4. Note that only Midwest shows outliers. How could you visually verify that both those outliers are indeed far enough away to be considered outliers by the traditional rule?