SOC The table below presents the scores of 15 states on three variables. Compute r and r 2 for each combination of variables. Write a paragraph interpreting the relationship among these three variables.

State Per Capita Expenditures on Education, 2005 Percent High School Graduates, 2006*

Rank in Per Capita Income, 2006 Arkansas 1,194 83 48 Colorado 1,659 90 8 Connecticut 2,197 88 1 Florida 1,374 87 20 Illinois 1,740 88 13 Kansas 1,571 90 21 Louisiana 1,431 80 34 Maryland 1,623 87 4 Michigan 1,911 90 27 Mississippi 1,226 81 50 Nebraska 1,338 91 23 New Hampshire 1,673 92 7 North Carolina 1,280 84 36 Pennsylvania 1,710 88 18 Wyoming 2,045 91 6

*Based on percentage of population age 25 and older.

Source: United States Bureau of the Census, Statistical Abstracts of the United States: 2008. pp. 147, 163, 439.