What about the countries with very large debts? In Example 4.11 we excluded six countries. The original data set did not include a value for the debt in 2007 for Japan. Here are the debts, in US$ billions, for the other five countries:
Add the data for these five countries to your data set, and make a scatterplot that includes the data for all 29 countries. Summarize the relationship. Do the additional data change the relationship? Explain your answer.