Regression & Correlation. Interval & Ratio Level Association. An Example. Explaining variation in % of state’s 2000 population receiving food stamps. Dependent Variable. State-to-state variation in % of state’s 2000 population receiving food stamps. Independent Variables.
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Interval & Ratio Level Association
r2 shows the amount (%) of explained
% Food Stamps = 16.7 +
.343(Teen Moms) -
.157(% HS) -
R2 = .443
Prob. = .000
rxy.z 2 shows the amount (%) of variation explained by independent variable, independent of the controls: