Look again at the scatter plot in the scenario. The country at point (9.7, 4.8) is the United States. The other 13 countries are all in Europe.
Compute the correlation coefficient and the regression equation when the United States is removed from the data. What is your conclusion?
Where would you place a new point on a scatter plot to make the correlation coefficient as close to 1 as possible? As close to 0 as possible?