Consider the scatterplot: unit pressure diff vs effectiveness 10 15 5 0 2. -10 -5 20 -100 0 100 200 effectiveness The correlation coefficient between effectiveness and unit pressure diff is closest to: -0.98031 0.41428 -0.69954 0.98048 -0.41483 O-0.01014 The regression line slope between effectiveness and unit pressure diff is closest to: -0.04202 -1.95677 1.68226 O-5.5391 The regression line y-intercept is closest to: 601.23937 -99.73725 4.9937