GDP - Gross Domestic Product GDP and Economic Growth Questions and Answers — Questions and Answers
Question 1: If a country's real GDP per capita is growing at a constant rate of 2.5% per year, approximately how many years will it take for its real GDP per capita to double?
- 18 years
- 28 years (Correct answer)
- 40 years
- 70 years
Correct answer: 28 years
The 'Rule of 70' is a useful approximation to estimate the doubling time for a variable growing at a constant rate. The formula is: Doubling Time ≈ 70 / (Annual Growth Rate). In this case, 70 / 2.5 = 28 years.
Question 2: A domestic manufacturer produces $1 million worth of goods in a year. They sell $800,000 worth to domestic consumers and add the remaining $200,000 worth to their warehouse. How is this accounted for in GDP using the expenditure approach (Y = C + I + G + NX)?
- $800,000 is added to Consumption (C), and the remaining $200,000 is not counted until it is sold.
- $1 million is added to Consumption (C).
- $800,000 is added to Consumption (C), and $200,000 is added to Investment (I). (Correct answer)
- $1 million is added to Investment (I).
Correct answer: $800,000 is added to Consumption (C), and $200,000 is added to Investment (I).
In the expenditure approach to calculating GDP, the $800,000 sold to households is counted as Personal Consumption Expenditures (C). The $200,000 of unsold goods is considered an increase in private inventories, which is a component of Gross Private Domestic Investment (I). Thus, the full $1 million value of production is captured in GDP.
Question 3: Which of the following is considered the most critical driver of sustained, long-run increases in a country's standard of living?
- A steady increase in the population size.
- Accumulation of physical capital.
- Government spending on infrastructure.
- Technological progress. (Correct answer)
Correct answer: Technological progress.
While capital accumulation and government spending contribute to growth, technological progress is the main driver of long-run growth and increased standards of living. It allows an economy to produce more output from the same or fewer inputs, overcoming the limitations of diminishing returns that affect capital and labor accumulation alone.
Question 4: An economy is operating where its actual real GDP is significantly lower than its potential GDP. This situation is best described as a(n):
- Inflationary gap
- Recessionary gap (Correct answer)
- Long-run equilibrium
- Supply-side shock
Correct answer: Recessionary gap
A recessionary gap occurs when the actual output (real GDP) of an economy is less than its potential output, indicating that resources like labor and capital are underutilized. This is characteristic of an economic downturn or recession.
Question 5: Which of the following institutional factors is most fundamental for encouraging the private investment and innovation necessary for long-term economic growth?
- High tariffs to protect domestic firms.
- Well-defined and legally enforced property rights. (Correct answer)
- Frequent government intervention in key industries.
- A large public sector to direct investment.
Correct answer: Well-defined and legally enforced property rights.
Well-defined and enforced property rights are a crucial institutional foundation for economic growth. They give individuals and firms the confidence that they can own and benefit from their investments, which provides a powerful incentive for capital accumulation, innovation, and efficient resource allocation.
Question 6: In Year 1, a country has a real GDP of $500 billion and a population of 50 million. In Year 2, real GDP grows to $525 billion and the population grows to 51 million. What is the approximate growth rate of real GDP per capita?
- 5.0%
- 7.0%
- 3.0% (Correct answer)
- 2.0%
Correct answer: 3.0%
The approximate growth rate of real GDP per capita is the growth rate of real GDP minus the growth rate of the population. Real GDP growth is (($525B - $500B) / $500B) * 100% = 5%. Population growth is ((51M - 50M) / 50M) * 100% = 2%. Therefore, the approximate growth in real GDP per capita is 5% - 2% = 3%.
GDP - Gross Domestic Product GDP and Economic Growth Questions and Answers
If a country's real GDP per capita is growing at a constant rate of 2.5% per year, approximately how many years will it take for its real GDP per capita to double?