A health-care researcher has obtained a sample of respondents from throughout the United States and has asked each one to indicate how worried he or she is about the avian flu on an interval-level scale. Before reporting the results for how worried Americans are about avian flu, the researcher wants to make sure the sample is representative of the United States in terms of geographic distribution, based on the U.S. Census Bureau’s division of the United States into four regions (Northeast, Midwest, South, and West). What statistical test should he use to answer this question?

In this series of questions, there are no headings that tell which flowchart to use. Plus, some gaps occur in the flowchart. For example, if the scenario has two dependent samples with an ordinal-level dependent variable, there is no such test in the flowchart. Tests exist for such situations; they just weren’t covered in this book. So, if a scenario in this series calls for a “missing” test, just write, “No such test in book” as your answer.