Gross domestic product | Back to BasicsGross Domestic Product: An Economy’s AllWhen it is growing, especially if inflation is not a problem, workers and businesses are generally better off than when it is notTIM CALLENPurchasing power parity | Back to BasicsPurchasing Power Parity: Weights MatterThe rate at which the currency of one country would have to be converted into that of another country to buy the same amount of goods and services in each countryTIM CALLENSee AlsoMagazine ArchivesCountry FocusBlogs