Question 1

Which of the following best explains why using exchange rates to compare GDP per capita across countries can be misleading?

Accepted Answer

Exchange rates do not account for differences in the prices of non-tradable goods and services across countries.

Question 2

What is the main advantage of using the Purchasing Power Parity (PPP) approach when comparing GDP per capita across countries?

Accepted Answer

PPP adjusts for differences in the cost of living and price levels between countries.

Question 3

According to the aggregate production function, which of the following is NOT a direct determinant of productivity?

Accepted Answer

Exchange rates

Question 4

Suppose Country A and Country B have the same amount of physical and human capital, but Country A has more advanced technology. According to the aggregate production function, which country will have higher output?

Accepted Answer

Country A, because better technology increases the efficiency of production.

Question 5

Refer to the second image. What economic concept does the diminishing vertical distance between points A and B illustrate?

Accepted Answer

Diminishing marginal product of capital

Question 6

If a country increases its physical capital stock but does not improve its technology or human capital, what will happen to its output according to the aggregate production function?

Accepted Answer

Output will increase, but at a decreasing rate due to diminishing marginal returns.

Question 7

Which of the following best describes the relationship between GDP per capita and the income of the poorest 10% as shown in the first image?

Accepted Answer

Countries with higher GDP per capita tend to have higher incomes for their poorest 10%.

Question 8

Which of the following is an example of human capital?

Accepted Answer

A worker's education and skills

Question 9

Suppose a country invests heavily in education and training for its workforce. According to the aggregate production function, what is the likely effect on the country's productivity?

Accepted Answer

Productivity will increase due to higher human capital.

Question 10

Which of the following best explains why technology is considered a broad concept in economics?

Accepted Answer

It includes both knowledge of production processes and the efficiency with which resources are used.

Question 11

If Burundi has a PPP-adjusted GDP per capita of $$994 and the US has 90$$,000, what does this indicate about the relative standard of living in these countries?

Accepted Answer

The average person in Burundi has a much lower standard of living than the average person in the US.

Question 12

Which of the following is a likely reason why some countries have much higher aggregate incomes than others?

Accepted Answer

They have higher levels of human capital, physical capital, and better technology.

Question 13

Refer to the third image. What does the vertical gap between the two curves represent?

Accepted Answer

The output difference due to better technology.

Question 14

Which of the following statements about the aggregate production function is correct?

Accepted Answer

It shows how output depends on physical capital, human capital, and technology.

Question 15

A country with high physical capital but outdated technology is likely to:

Accepted Answer

Have lower productivity than a country with similar capital but better technology.

Question 16

Which of the following best describes the process by which advances in technology occur, according to the study materials?

Accepted Answer

They result from the optimizing decisions of entrepreneurs and firms seeking to innovate and reduce costs.

Question 17

If a country’s GDP per worker is much higher than its GDP per capita, what does this suggest about the country?

Accepted Answer

A large portion of the population is not in the workforce.

Question 18

Which of the following is a plausible reason why the poorest 10% in some countries have higher daily incomes than in others, even at similar GDP per capita levels?

Accepted Answer

Differences in income distribution and social policies.

Question 19

Which of the following equations best represents a simplified aggregate production function?

Accepted Answer

$$Y = A \cdot F(K, H)$$

Question 20

If a country wants to increase its aggregate income in the long run, which combination of policies is likely to be most effective?

Accepted Answer

Investing in education, physical capital, and supporting technological innovation.

Aggregate Incomes and Productivity: International Comparisons and Determinants

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