National Income Accounting

Match each circular flow component or stream in a four-sector economy with its correct economic description.

In Year 1, a country recorded a base price index of $100$. By Year 5, the country's Nominal Gross Domestic Product (GDP) reached $\text{₦}900\text{ billion}$, and its GDP deflator rose to $150$. If the total population in Year 5 stood at $40\text{ million}$, what is the nation's Real Per Capita Income for Year 5 in Naira?

The national economic accounts for the Republic of Kwararafa in a given fiscal year are as follows:

- Personal Consumption Expenditure ($C$): $\text{��}450\text{ billion}$
- Gross Private Domestic Investment ($I$): $\text{₦}180\text{ billion}$
- Government Spending ($G$): $\text{₦}220\text{ billion}$
- Exports ($X$): $\text{₦}95\text{ billion}$
- Imports ($M$): $\text{₦}115\text{ billion}$
- Net Factor Income from Abroad ($NFIA$): $-\text{₦}15\text{ billion}$
- Capital Consumption Allowance: $\text{₦}40\text{ billion}$

Based on the expenditure method, calculate the Gross National Product (GNP) at market prices in billions of Naira.

The national income data for a sovereign country in a given financial year are presented in the table below:

Using the expenditure approach, what is the Gross National Product ($\text{GNP}$) of the economy?

In a four-sector open economy, circular flow equilibrium requires that total leakages ($S + T + M$) equal total injections ($I + G + X$). If domestic investment ($I$) increases by $\$40\text{ billion}$, government spending ($G$) decreases by $\$15\text{ billion}$, exports ($X$) rise by $\$25\text{ billion}$, tax revenues ($T$) increase by $\$20\text{ billion}$, and imports ($M$) remain constant, what change in household savings ($S$) is required to maintain equilibrium?

The national income data for an economy over two consecutive years is shown in the table below:

Based on these national income estimates and the standard limitations of national income accounting, which of the following accurately assesses the change in the average citizen's economic welfare from Year 1 to Year 2?

In 2025, Country Alpha recorded a Nominal Gross Domestic Product (GDP) of $\$600\text{ billion}$. The country's GDP deflator was $150$ (with base year index = $100$) and its total population was $80\text{ million}$. To assess living standards accurately, economists adjust national income figures for inflation and population size. What is the Real Per Capita GDP of Country Alpha in dollars?

The following macroeconomic indicators (in billions of Naira) were released for an open economy during a given fiscal period:

Using the expenditure method, what is the Gross National Product ($GNP$) at market prices for this economy?

In the circular flow of income model for a simple two-sector economy comprising households and firms, interactions generate both real flows and money flows between the two sectors. Which of the following correctly identifies a real flow directed from households to firms?

In a given fiscal year, a nation recorded a Nominal Gross Domestic Product (GDP) of $\text{₦}600\text{ billion}$ while its GDP deflator stood at $150$. Calculate the Real GDP of the nation for that year in billions of Naira.

Government agencies frequently compile national income statistics to evaluate overall macroeconomic performance. Which of the following represents a primary use of national income estimates in economic management?

An economic analyst comparing the standard of living between two nations observes that Country M reports a significantly lower Real Gross Domestic Product (GDP) per capita than Country N. However, a detailed socio-economic survey reveals that citizens in Country M enjoy higher life expectancy, lower stress levels, and consume a vast quantity of unrecorded home-grown agricultural produce and informal family care services. Which of the following best explains why the national income estimates fail to accurately reflect the comparative economic welfare of these two countries?

Two sovereign nations report identical figures for Real Gross Domestic Product (GDP) per capita. However, the majority of citizens in Country A enjoy noticeably higher welfare and living standards than those in Country B. Which of the following economic factors best accounts for this limitation in using national income data to compare living standards?

An economy comprises three interconnected firms operating within a single production year:

- Firm P extracts raw iron ore valued at $\$15\text{ million}$. It sells $\$10\text{ million}$ worth of ore to Firm Q and exports the remaining $\$5\text{ million}$ directly to foreign buyers.
- Firm Q processes the $\$10\text{ million}$ ore to produce steel valued at $\$28\text{ million}$. It sells $\$20\text{ million}$ worth of steel to Firm R and retains $\$8\text{ million}$ of steel as capital inventory additions.
- Firm R manufactures motor vehicles valued at $\$50\text{ million}$, utilizing the $\$20\text{ million}$ steel purchased from Firm Q along with $\$5\text{ million}$ worth of imported engine components.

To avoid double counting and correctly account for intermediate inputs, what is the total contribution of these production activities to the nation's Gross Domestic Product (GDP)?

Match each market component or sector flow in the circular flow of income with its correct functional economic description.

In Period 1, an economy recorded a Nominal GDP of $\text{₦}500\text{ billion}$, a GDP deflator of $100$, and a total population of $40\text{ million}$. By Period 2, Nominal GDP expanded to $\text{₦}750\text{ billion}$, the GDP deflator increased to $125$, and the population grew to $50\text{ million}$. What was the percentage change in the country's real per capita income between Period 1 and Period 2?

The following macroeconomic data (in billions of Naira) were released for the Republic of Veridia for a given fiscal year:

- Personal Consumption Expenditure ($C$): $\text{₦}520\text{ billion}$
- Gross Domestic Fixed Capital Formation: $\text{₦}180\text{ billion}$
- Value of Physical Change in Stocks: $\text{₦}25\text{ billion}$
- Government Final Consumption Expenditure ($G$): $\text{₦}210\text{ billion}$
- Exports ($X$): $\text{₦}95\text{ billion}$
- Imports ($M$): $\text{₦}115\text{ billion}$
- Net Factor Income from Abroad: $\text{₦}35\text{ billion}$

Using the expenditure method of national income measurement, what is the value of the Gross National Product (GNP) at market prices in billions of Naira?

In Year 1, Country Y recorded a Nominal GDP of $\text{₦}3.2\text{ trillion}$. By Year 2, its Nominal GDP increased by $25\%$, while its GDP deflator stood at $125$ (with base year price index = $100$). If the Real Per Capita Income of Country Y in Year 2 was $\text{₦}64,000$, what was the total population of Country Y in Year 2 (in millions)?

A national income statistician conducting a census of production in a developing country discovers that over $60\%$ of small-scale market vendors do not maintain financial books or receipts for their transactions. Which major practical difficulty in national income accounting does this scenario directly illustrate?

In 2024, Country Alpha recorded a Nominal Gross Domestic Product (GDP) of $\text{₦}1.5\text{ trillion}$ with a GDP deflator of $120$. If the total population of Country Alpha in 2024 was $25\text{ million}$, what was the Real Per Capita Income of the country in Naira?