With a small sample, a single point can have large effect on the magnitude of the correlation ...

     For the   following scores,   a. Compute the Pearson   correlation.   X Y SP =   3 12 SSy=   6 7 SSx =   3 9 r =   5 7   3 10      b. With a small sample, a   single point can have large effect on the magnitude of the correlation.   Change the score X = 5 to X = 0 and compute the Pearson Correlation.