Investment (I) in GDP

GDP Components in Major Economies (Example)

GDP Expenditure Formula (National Income Identity)

Consumption (C) as a Component of GDP

Government Spending (G) as a Component of Aggregate Expenditure

An economy reports the following activities for a single year (all figures in billions of dollars): A domestic firm purchases new machinery for $150, the total value of unsold goods in warehouses increases by $50, household spending on new cars is $200, the government pays $100 in salaries to public school teachers, and the government distributes $75 in unemployment benefits. Based on this information, what is the total value of Investment for this year?

Match each economic transaction to the specific component of GDP it would be categorized under, based on the expenditure approach.

Correcting a GDP Calculation

A country experiences a significant increase in its trade deficit (imports growing much faster than exports). This event, by itself, will necessarily lead to a decrease in the country's Gross Domestic Product (GDP).

Calculating GDP from Expenditure Data

Distinguishing Consumption from Investment in GDP Accounting

A country's automotive company produces $100 million worth of cars in a single year. During that year, it sells $70 million worth of cars to domestic households and exports $20 million worth to foreign buyers. The remaining $10 million worth of cars are not sold and are added to the company's inventory. Based on the expenditure approach, what is the total contribution of these activities to the country's Gross Domestic Product (GDP) for that year?

The government of a country spends $50 billion on a new high-speed rail project. Of this total amount, $10 billion is spent on specialized equipment imported from another country. All other expenditures are on domestically produced goods and services. What is the immediate net effect of this project on the country's Gross Domestic Product (GDP)?

Impact of Inventory Changes on GDP

Suppose a country's Gross Domestic Product (GDP) was exactly the same in Year 1 and Year 2. Which of the following scenarios is the only one that could explain this observation, assuming all values are in billions of dollars?

Government Spending in GDP

Exports (X)

Imports (M)

Aggregate Demand (AD)

Net Exports (Trade Balance) in GDP

In a simplified economy, firms produce a total output valued at $800 million. During the same period, total planned spending (the sum of what households plan to consume and what firms plan to invest in new capital) is calculated to be $780 million. Based on the conventions of national income accounting, how does this situation affect business inventories?

Planned vs. Unplanned Investment

In a macroeconomic model where equilibrium occurs when total output equals total planned expenditure, a situation where businesses sell more goods than they produced during a period results in a positive and planned inventory investment.

Interpreting Inventory Signals

Calculating Unplanned Inventory Change

The Role of Unplanned Inventories in Economic Adjustment

Match each economic scenario with the resulting change in business inventories, based on the principle that all inventory changes are considered unplanned.

In a given period, an economy's firms produce a total output of $500 billion. During the same period, the total of all planned spending (by households, firms for new capital, and government) amounts to $520 billion. What is the immediate result for business inventories, and what does this signal to firms about future production levels?

An economy is initially in a state where total production exceeds total planned spending. Arrange the following events in the logical sequence that describes how the economy adjusts.

In macroeconomic models, the difference between the total value of goods and services produced in an economy and the total amount of planned spending is defined as ____ inventory investment.

Aggregate Demand (AD)