<< Chapter < Page Chapter >> Page >

By the end of this section, you will be able to:

  • Identify the components of GDP on the demand side and on the supply side
  • Evaluate how gross domestic product (GDP) is measured
  • Contrast and calculate GDP, net exports, and net national product

Macroeconomics is an empirical subject, so the first step toward understanding it is to measure the economy.

How large is the U.S. economy? The size of a nation’s overall economy is typically measured by its gross domestic product (GDP)    , which is the value of all final goods and services produced within a country in a given year. The measurement of GDP involves counting up the production of millions of different goods and services—smart phones, cars, music downloads, computers, steel, bananas, college educations, and all other new goods and services produced in the current year—and summing them into a total dollar value. This task is straightforward: take the quantity of everything produced, multiply it by the price at which each product sold, and add up the total. In 2014, the U.S. GDP totaled $17.4 trillion, the largest GDP in the world.

Each of the market transactions that enter into GDP must involve both a buyer and a seller. The GDP of an economy can be measured either by the total dollar value of what is purchased in the economy, or by the total dollar value of what is produced. There is even a third way, as we will explain later.

Gdp measured by components of demand

Who buys all of this production? This demand    can be divided into four main parts: consumer spending (consumption), business spending (investment), government spending on goods and services, and spending on net exports. (See the following Clear It Up feature to understand what is meant by investment.) [link] shows how these four components added up to the GDP in 2014. [link] (a) shows the levels of consumption, investment, and government purchases over time, expressed as a percentage of GDP, while [link] (b) shows the levels of exports and imports as a percentage of GDP over time. A few patterns about each of these components are worth noticing. [link] shows the components of GDP from the demand side. [link] provides a visual of the percentages.

(Source: http://bea.gov/iTable/index_nipa.cfm)
Components of u.s. gdp in 2014: from the demand side
Components of GDP on the Demand Side (in trillions of dollars) Percentage of Total
Consumption $11.9 68.4%
Investment $2.9 16.7%
Government $3.2 18.4%
Exports $2.3 13.2%
Imports –$2.9 –16.7%
Total GDP $17.4 100%

Percentage of components of u.s. gdp on the demand side

This pie chart shows the percentage of components of U.S. GDP on the demand side as follows: Consumption: 68.4% Investment: 16.7% Government: 18.4% Exports: 13.2% Imports: −16.7%
Consumption makes up over half of the demand side components of the GDP. (Source: http://bea.gov/iTable/index_nipa.cfm)

What is meant by the word “investment”?

What do economists mean by investment, or business spending? In calculating GDP, investment does not refer to the purchase of stocks and bonds or the trading of financial assets. It refers to the purchase of new capital goods, that is, new commercial real estate (such as buildings, factories, and stores) and equipment, residential housing construction, and inventories. Inventories that are produced this year are included in this year’s GDP—even if they have not yet sold. From the accountant’s perspective, it is as if the firm invested in its own inventories. Business investment in 2014 was almost $3 trillion, according to the Bureau of Economic Analysis.

Questions & Answers

Which of the following are assets of the Federal Reserve? a. Treasury bills held by the Federal Reserve b. cash in circulation c. Loans made by commercial banks d. the reserves of commercial banks at the Federal Reserve
Julya Reply
D
Neeha
a
Sushovan
d
Roger
what are the four functions served by money
Michele Reply
It serves as a medium of exchange
Zaharaddeen
It serves as a store of value
Zaharaddeen
It serves as a unit of account
Umar
It also serves as a standard for Differed Payment.
Umar
Acts as a measure of value.
Humphrey
acceptability
GGPS
hi
Shaxboz
hello
Md
welcome
Shaxboz
Hey, I am a new member.
Abdul
Store of value
Bokwe
can anyone tell me that why in the income and consumption curve the income is on x axis?
bechar Reply
why inflation in double digit is not good for economy
Obaid Reply
what is mean by zero inflation
Obaid
some time it is good but some time it is not...
bechar
the condition of that economy tell you. is it good are bad?
bechar
the definition of the law of demand
Aley Reply
law of damand states all else remains constant or what we can say is ceteris peribus,quantity demanded for a commodity extends with fall in price and vice versa. law of demand explains inverse relationship between price and qua ntity demanded
Gaurav
What is demand and supply
Antwi Reply
what is gdp per capital and why it is used for?
Era Reply
gross domestic product
prince
gdp per capita is the gross domestic product per person (GDP/population) and is a better indicator of economic health and living standards than GDP alone.
Gina
thank you so much 😘
Era
please explain shift in production possibility curve
Kobby
advances in technology can cause a shift in the ppf because output can increase with use of the same amount of resources (laborers can produce more efficiently, and suppliers are willing to sell more)
Gina
but equally natural shocks ie earthquakes or war can move the ppf inward so reducing production capicity
jax
what is crowding out effect?
Sera Reply
What is SAT AND GPA
prince
What to read the introduction
prince Reply
Keynesian theory of employment
sainlangki Reply
it's about use of Fiscal policy.
yvonne
yar what actually means of APc. averge means?. can someone give a best example plz
Asrar Reply
APC is average propensity to consume n this refers to ratio of consumption expenditure to corresponding level of income
Vishakha
then it means both MPC and ApC are same ?
Asrar
No..... APC is average propensity to consume whereas MPC is marginal propensity to consume
Vishakha
APC=C/I , MPC=∆C/∆I
Vishakha
which model predicted a global collapse in the world's social and economic system before the year 2010
Francis Reply
trade deficit
Amadou
is trade deficit the correct answer?
Abinash
yes
Amadou
what is the formula of mixed income ?
Sanjum Reply
NDPfc = COE + OS +MI MI=NDPfc- COE- OS
Vishakha
labor force in.Nigeria is seen as .......?
Aisha Reply
Is demand the same as being in need of a product?
Aphiwe Reply
yeah
Demand is defer from only need of products
Zubairu
need is the primary and main root of demand. but demand is the result of combination of need; income capacity and desire to expend of money for that product.
Ramu
products or services
jax

Get the best Macroeconomics course in your pocket!





Source:  OpenStax, Macroeconomics. OpenStax CNX. Jun 16, 2014 Download for free at http://legacy.cnx.org/content/col11626/1.10
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Macroeconomics' conversation and receive update notifications?

Ask