Correlation range -1 to 1 inclusive (strength and direction of relationship) Coefficient of Determination- how well the model explains future outcomes (explained variability) r2 p2 -percentage of change in the dependent variable that is influenced by independent variable - closer slope gets to 0 there is no relationship A regression equation is used to predict or forecast the dependent variable Sign of slope line tells you sign of multiple r Goal to increase explained variation (r2) and unexplained variation