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The Gross domestic product is the best way to measure a countrys economy. GDP is the total value of everything produced by all the people and companies in the country. It does not matter if they are citizens their foreign owned companies. If they are located within the countrys boundaries, the government counts their production as GDP. There are many different ways to measure a countrys GDP. Nominal GDP is the raw measurement that includes price increases. The Bureau of Economic Analysis measures nominal GDP quarterly. It revises the quarerly estimate each month as it receives updated data. Real GDP compares economic output from one year to another, you must account for the effects of inflation. To do this, the BEA calculates real GDP. It does this by using a price deflator. It tells you how much prices haved changed since a base year. The BEA multiplies the deflator by the nominal GDP. The BEA makes three important distinctions which involves Income from U.S. companies and people from outside the country are not included. That removes the impact of exchange rates and trade policies. The effects of inflation are taken out. Only the final product is counted. For example, a U.S. footwear manufacturer uses laces and other materials made in the United States. Only the value of the shoe gets counted. The sholeace does not. GDP growth rate is the percent increase in GDP from quarter to quarter. It tells you exactly how fast a countrys economy is growing. Most countries use real GDP to remove the effect of inflation. GDP per Capita is the best way to compare gross domestic product between countries. Thats because some countries have enormous economic outputs because they have so many people. To get a more accurate picture, it is helpful to use GDP per capita. This divides gross doemestic product by the number of residents. it is a good measure of the countrys standard of living. The west way to compare gross domestic product by year and between countries is with real GDP per capita. This takes out the effects of inflation, exchange rates and differences in population. The different measures of GDP are great tools for comparing the economies of other countires or how an economy changes over time. When economises talk about abouts the size of an economy, they are referring to GDP. The growth rate measures whether the economy is growing more quickly or more slowly than the quarter before. If it produces less than the quarter before, it contracts and the growth rate is negative. This signals a recession. As bad as a recession is, you also do not want the growth rate to be too high. Then you will get inflation.