When calculating GDP using the income approach, all expenditures in an economy equal the total income from producing goods and services.

The annual growth rate of real gross domestic product (GDP) is the broadest indicator of economic activity -- and the most closely watched. Learn how it's presented in official releases and how to ...

Now, China is calculating GDP based on economic activity of each quarter to make the data "more accurate in measuring the seasonal economic activity and more sensitive in capturing information on ...