For each data set given in 9a-c, draw a scatter plot and find the correlation coefficient, r. State what this value of r implies about the data, and note any surprising results you find.
a. {(0.5, 1), (0.6, 0.9), (0.7, 0.8), (0.8, 0.7), (0.9, 0.6)}
b. {(0.5, 1), (0.6, 0.9), (0.7, 0.8), (0.8, 0.7), (0.9, 0.6), (1.9, 1.9)}
c. {(0.5, 1), (0.6, 0.9), (0.7, 0.8), (0.8, 0.7), (0.9, 0.6), (1.9, 0.9)}
d. Based on your answers to 9a-c, do you think the correlation coefficient is strongly affected by outliers?