Many countries, especially those in Europe, have significant gold holdings. But many of these countries also have massive debts. The following data show the total value of gold holdings in billions of U.S. dollars and the debt as a percentage of the gross domestic product for nine countries (WordPress and Trading Economics websites, February 24, 2012). Country Gold Value Debt China 63 17.7 France 146 81.7 Germany 203 83.2 Indonesia 33 69.2 Italy 147 119 Netherlands 36 63.7 Russia 50 9.9 Switzerland 62 55 U.S. 487 93.2 Suppose that after looking at the scatter diagram in part (a) that you were able to visually identify what appears to be an influential observation. Drop this observation from the data set and fit an estimated regression equation to the remaining data. Y^ =
Many countries, especially those in Europe, have significant gold holdings. But many of these countries also have massive debts. The following data show the total value of gold holdings in billions of U.S. dollars and the debt as a percentage of the gross domestic product for nine countries (WordPress and Trading Economics websites, February 24, 2012).
|
Country |
Gold Value |
Debt |
|
China |
63 |
17.7 |
|
France |
146 |
81.7 |
|
Germany |
203 |
83.2 |
|
Indonesia |
33 |
69.2 |
|
Italy |
147 |
119 |
|
Netherlands |
36 |
63.7 |
|
Russia |
50 |
9.9 |
|
Switzerland |
62 |
55 |
|
U.S. |
487 |
93.2 |
Suppose that after looking at the
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