Question: a) Suppose that we have two data points with (x,y) values (2,3) and (1,1). What is the sample correlation coefficient r for these two points?

a) Suppose that we have two data points with (x,y) values

a) Suppose that we have two data points with (x,y) values (2,3) and (1,1). What is the sample correlation coefficient r for these two points? (You may figure this out by reasoning, use Splus, MATLAB, or hand calculate.) r = b) Now consider the two points (2,3) and (3,1). What is the sample correlation coefficient r for these two points? r = c) Now consider all three points (2,3), (1,1), and (3,1). What is the sample correlation coefficient r for these three points? r=

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