GDP

Session 2: Measuring Macroeconomic Aggregates (GDP)

Key Concepts:

  1. GDP (Gross Domestic Product):

    • Represents the total monetary value of all finished goods and services produced within a country over a specific time period.


  1. GDP Limitations:

    • Informal Economy: Certain economic activities, like informal labor, aren't captured.

    • Quality of Life: GDP doesn’t measure non-economic factors like happiness or environmental health.


    • GDP Excludes: Black market and informal  economy activities.

    • Components:

      • Consumption: Household spending.

      • Investment: Business expenditures on capital.

      • Government Spending: Public sector expenditures.

      • Net Exports: Exports minus imports.

Market value: GDP adds together many different kinds of products into a single measure of the value of economic activity. To do this, it uses market prices. If the price of an apple is twice the price of an orange, then an apple contributes twice as much to GDP as does an orange.


  1. Three Methods to Calculate GDP:

    • Output Method: ( Product Method)Measures the sum total of value of goods and services produced.

    • Income Method: Measures the sum total of all income earned (wages, rents, profits).

    • Expenditure Method: Summarizes the sum of all total spending on final goods/services.

Important =C+G+I+X-M 

C=Consumption

G=Government Expenditure 

I=Investment

X-M= Net exports ( exports - Imports)


Measuring national income: The Product Method 

  • The product method simply involves adding up the value of everything produced in the country during the year


  1. GDP Growth Rate: ( Gives history of a country; how has been doing)

    • Measures how fast an economy is growing, indicating changes in economic health.

    • High growth rates signal economic expansion, while negative rates signal contraction.

What is Gross National Income ( GNI)? 

  • Gross National Income 

Is the total amount of money earned by a nation's people and businesses. It is used to measure and track a nation's wealth from year to year. The number includes the nation’s gross domestic product (GDP) plus the income it receives from overseas sources. 

GNI= GDP+Income from abroad- Income sent aboard

 Net national Income ( NNI)

  • Is defined as gross national income minus the depreciation of fixed capital assets