Consider the four (x, y) pairs (0, 0), (1, 1), (1, -1), and (2, 0). a. What

Question:

Consider the four (x, y) pairs (0, 0), (1, 1), (1, -1), and (2, 0).
a. What is the value of the sample correlation coefficient r?
b. If a fifth observation is made at the value x = 6, find a value of y for which r = 0.5.
c. If a fifth observation is made at the value x = 6, find a value of y for which r = 0.5. Cumulative Review Exercises