Using cost-of-living data from the ACCRA Cost of Living Index (see the file P2_19.XLS), examine the relationship between the geographical location of an urban area within the United States (e.g., northeast, southeast, midwest, northwest, or southwest) and its composite cost-of-living index. In other words, is the overall cost of living higher or lower and more or less variable for urban areas in particular geographical regions of the country? You will need to assign the given urban areas systematically to one of several geographical regions before you can apply appropriate summary measures in responding to this question. Summarize your findings in detail.