If a scatter plot of variables X and Y shows a trend that can be summarized to a large degree by a straight line with slope 0.8 and y- intercept 0.2 (i.e., Y = 0.2+0.8X), then the correlation coefficient between X and Y is, O Closer to 1, and there is a causal relation between X and Y (either X causes Y or Y causes X) O Closer to 0, and there is a causal relation between X and Y (either X causes Y or Y causes X) O Closer to 0, but there is no causal relation between X and Y Closer to 1, but there is no causal relation between X and Y O Closer to 1, and there may be a causal relation between X and Y, but not necessarily