Question: Consider the following set of data points. a. Compute the linear correlation coefficient, r. b. Can you conclude from your answer in part (a) that

Consider the following set of data points.

a. Compute the linear correlation coefficient, r.
b. Can you conclude from your answer in part (a) that the variables x and y are unrelated? Explain your answer.
c. Draw a scatterplot for the data.
d. Is use of the linear correlation coefficient as a descriptive measure for the data appropriate? Explain your answer.
e. Show that the data are related by the quadratic equation y = x2. Graph that equation and the data points.

r 3 2-1 0 1 2 3 9 4 0 4 9

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