To compare income across countries in a common currency,economists generally prefer to use the

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The purchasing power parity (PPP) method is preferred by economists to compare income across countries in a common currency because it takes into account the relative cost of goods and services in different countries. This is important because exchange rates do not always accurately reflect these differences in costs, leading to a potentially distorted comparison of income levels. PPP adjusts for the variation in the cost of living across countries, allowing for a more accurate comparison of incomes.

To Compare Income Across Countries in a Common Currency,economists Generally