The United States federal government collects information on Americans who do not have health insurance. Data from 2004 are broken down into 4 regions of the country. These data are summarized in the table provided below. Using this table, answer the following questions.
- We wish to investigate the relationship between which two categorical variables?
- We wish to investigate if the region in which one lives affects whether or not one has health insurance. Which would be the explanatory variable?