Figure 3.27 shows how the mortality rate from melanoma (a form of skin cancer) varies on a county-by-county basis across the United States. The legend shows that the darker the shading in a county, the higher the mortality rate. Discuss a few of the trends revealed in the figure. If you were researching skin cancer, which regions might warrant special study? Why?
Figure 3.27

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Probability That a Black Student Would Have White Classmates ■ l ess than 10% 20%-40% 40%-60% More than 80% l Counties with no data or no black students