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Question 1 Report
The bank established to finances project aimed at promoting economic and social development within the African continent is
Answer Details
The bank that is primarily dedicated to financing projects aimed at promoting economic and social development within the African continent is the African Development Bank (AfDB).
The African Development Bank (AfDB) was established in 1964 with the main objective to reduce poverty, improve living conditions, and promote economic and social development in African countries. It achieves these goals by providing loans and grants for a variety of development projects and programs across the continent. These projects cover various sectors including infrastructure, education, healthcare, agriculture, and energy.
Unlike purely commercial banks, the AfDB is focused on development projects that may not always have immediate financial returns but are crucial for the sustainable growth and development of African nations. The bank works together with member countries and international partners to mobilize resources and expertise needed to tackle the continent's challenges, often adopting innovative financing solutions tailored to the unique needs of the African context.
Question 2 Report
Under perfect competition, a profit maximizing firm will hire labour up to the point where the last unit of labor adds
Answer Details
Under perfect competition, a profit-maximizing firm will hire labor up to the point where the marginal revenue product of labor (MRP) is equal to the wage rate. MRP represents the additional revenue generated by adding one more unit of labor.
Since the firm aims to maximize profits, it will continue hiring labor until the MRP is greater than or equal to the wage rate. At this point, the last unit of labor hired contributes more to total revenue than to total cost, resulting in increased profits for the firm.
Question 3 Report
Which of the following is NOT a major role of OPEC in production, and marketing of petroleum?
Answer Details
Refining of petroleum products in member countries is NOT a major role of OPEC in the production and marketing of petroleum.
Let me explain why:
In summary, the main roles of OPEC include balancing oil production and prices and ensuring a steady supply, but they do not majorly focus on the refining of petroleum products.
Question 4 Report
Which of the following is NOT an objective of Economic planning?
Answer Details
Economic planning is an important policy tool used by governments to coordinate their efforts in improving the nation's economy. Let's look at the objectives:
Equitable allocation of resources: This is indeed an objective of economic planning. It ensures that resources are distributed evenly across different sectors and regions to promote balanced development and reduce regional disparities.
Achieving economic growth: Another key objective of economic planning is to spur economic growth. This involves increasing the capacity of the economy to produce goods and services, enhancing the standard of living, and elevating the overall wealth of the nation.
Creating employment: Economic planning aims to create jobs for the population. By fostering industries and fostering investment, economic planning attempts to reduce unemployment rates and provide more job opportunities.
Widening the income gap: This is NOT an objective of economic planning. Economic plans generally aim to reduce, not widen, the income gap between different segments of society. A widening income gap can lead to increased poverty and social unrest, which are contrary to the goals of economic planning focused on promoting equality and social harmony.
Question 5 Report
Answer Details
The concept we are discussing here is the Price Elasticity of Demand (PED). It measures how much the quantity demanded of a commodity changes with a change in its price. The formula for calculating the price elasticity of demand is:
PED = (% Change in Quantity Demanded) / (% Change in Price)
First, we calculate the percentage change in quantity demanded:
Percentage change in quantity demanded:
= (Change in quantity demanded / Initial quantity demanded) × 100
= (-20 / 100) × 100 = -20%
Next, calculate the percentage change in price:
Percentage change in price:
= (Change in price / Initial price) × 100
= (2 / 8) × 100 = 25%
Now, we can substitute these values into the formula for PED:
PED = (% Change in Quantity Demanded) / (% Change in Price)
= (-20%) / (25%)
= -0.8
The price elasticity of demand is -0.8. The negative sign indicates that there is an inverse relationship between price and quantity demanded, which is normal for most goods. This value rounded to the nearest value provided in your options is 0.8. This implies it is inelastic demand, meaning the quantity demanded is not very responsive to price changes.
Question 6 Report
Which of the following is a disadvantage of localization of industries?
Answer Details
Localization of industries, also known as industrial clustering or agglomeration, refers to the concentration of similar industries or related businesses in a specific geographic area. While there are various advantages associated with localization, such as promoting knowledge spillovers, fostering collaboration, and enhancing economies of scale, it can also have disadvantages.
One of the disadvantages is the creation of structural unemployment. When industries concentrate in a particular region job opportunities may become limited to that specific area. As a result, workers in other regions or industries may face challenges in finding employment, leading to structural unemployment. This can be particularly problematic if the localized industry experiences a decline or faces disruptions, resulting in job losses for a significant portion of the workforce.
Question 7 Report
Which of the following is NOT associated with minimum price legislation?
Answer Details
Minimum price legislation is a policy where the government sets a lower price limit for certain goods or services, meaning they cannot be sold below this set price. It is often intended to protect producers, ensuring they receive fair compensation and maintaining industry standards.
When a minimum price is set above the equilibrium price, it typically leads to several economic effects:
Excess demand is NOT associated with minimum price legislation. Excess demand occurs when the price is set too low, leading to a situation where the quantity demanded exceeds the quantity supplied. This situation is commonly related to maximum price controls, not minimum price legislation.
Question 8 Report
An exceptional demand curve can result from
Answer Details
An exceptional demand curve occurs when demand does not follow the typical downward slope from left to right. Instead, the demand curve may slope upward. Let’s consider some scenarios that could lead to this unusual situation.
Increase in Price of Raw Materials: This typically affects the supply side rather than the demand side. When prices of raw materials increase, production costs go up, possibly reducing supply, but not necessarily impacting demand directly. Therefore, this is not usually a reason for an exceptional demand curve.
Change in Taste of Consumer: If consumers suddenly prefer a particular product, they may be willing to buy more even if the price rises. This shift in consumer preferences can lead to an upward-sloping demand curve, reflecting increased demand despite higher prices.
Increase in the Size of the Population: More people can lead to higher overall demand, but each individual’s demand curve typically still slopes downward due to the law of diminishing marginal utility. Therefore, population increase alone generally does not cause an exceptional demand curve.
Expectation of Future Price Increase: When consumers expect prices to rise in the future, they may choose to buy more now to avoid paying higher prices later. This situation can lead to an upward-sloping demand curve as current demand increases with rising prices, due to future price expectations.
In summary, an exceptional demand curve is usually caused by changes in consumer tastes or expectations of future price increases, making current demand behave in an unexpected way compared to the usual downward slope.
Question 9 Report
What add funds to the circular flow?
Answer Details
The concept of the circular flow of income represents how money moves within an economy among consumers, businesses, and various markets. In this circular flow, three key elements can either add to or reduce the flow of funds: **leakages** and **injections**.
Leakages are the flows of money that exit the circular flow. They reduce the amount of money that circulates within the economy. Common leakages include savings, taxes, and imports. For instance, when individuals save money instead of spending it, that money is not used to purchase goods or services, thus exiting the circular flow.
Injections, on the other hand, are the activities or financial inflows that add funds to the circular flow of income, ensuring continued economic activity. They increase the total amount of money circulating in the economy. These include investment, government spending, and exports.
The expenditure approach is a method for calculating a nation's Gross Domestic Product (GDP) by considering the total expenditure on the nation's final output of goods and services in a year. While this approach helps to measure the size of the economy, it is not directly responsible for adding funds to the circular flow. Instead, it relies on the activities of consumption, investment, government spending, and net exports.
In conclusion, it is the concept of injection that directly adds funds to the circular flow, stimulating economic activities and growth by multiplying the effects of initial spending through the economy.
Question 10 Report
One of the function of united nation conference on trade and development (UNTAD) is to
Answer Details
The United Nations Conference on Trade and Development (UNCTAD) is a UN body that focuses on trade and development issues, particularly those affecting developing countries. One of the functions of UNCTAD is to facilitate the transfer of technology from developed to less developed countries. This involves promoting the dissemination and adoption of technology in less developed countries to enhance their productive capacities, economic growth, and development.
UNCTAD recognizes that technology plays a crucial role in bridging the development gap between countries. By facilitating the transfer of technology, UNCTAD aims to enable developing countries to access and utilize advanced knowledge, skills, and technological innovations available in developed countries. This transfer of technology can occur through various means such as technical assistance, capacity building, knowledge sharing, and promoting partnerships between developed and developing countries.
Question 11 Report
The following determine the level of consumption EXCEPT
Answer Details
The level of consumption generally refers to the amount of goods and services that households are willing and able to purchase. This can be influenced by several factors:
Level of Income: The more income people earn, the more they can spend on goods and services, which directly affects consumption levels. With higher income, households typically increase their consumption.
The Rate of Taxes Paid: Taxes directly impact disposable income, which is the income available after tax deductions. Higher taxes reduce disposable income and may lead to lower consumption, while lower taxes increase disposable income and can potentially boost consumption.
Savings: When households allocate a portion of their income to savings, this reduces the immediate level of consumption. Therefore, high levels of savings can indicate lower levels of consumption.
The Political Climate: Although the political climate can affect the economy in various ways, it is generally not a direct and immediate determinant of consumption levels. The political climate can influence factors like economic stability and government policies, but it is not a direct factor in determining how much households consume.
Based on these explanations, the factor that determines the level of consumption the least is the political climate, because its effects are indirect and less immediate compared to the direct effects of income, taxes, and savings on consumption.
Question 12 Report
Which of the following is NOT included in-measuring the National income through the income approach?
Answer Details
When measuring national income using the **Income Approach**, the focus is on summing up all the **incomes earned** by individuals and businesses in an economy for providing goods and services. This typically includes wages, profits, rents, and interest received. Let's examine each option:
Question 13 Report
The following are rewards for factors of production EXCEPT
Answer Details
Factors of production are the inputs used to produce goods and services in an economy. The main factors of production include land, labor, capital, and entrepreneurship. Each of these factors receives a specific reward or return:
The term subsidy is generally not a reward for factors of production. A subsidy is a financial assistance granted by the government to individuals or businesses to support activities, promote economic growth, or reduce the cost of certain goods and services. It is not directly linked to any of the classical factors of production.
In conclusion, while profit, rent, and interest are returns directly associated with factors of production, a subsidy is not. It serves a different purpose in economic policy.
Question 14 Report
What is the median term in the distribution below; 14, 13 29,15,13,17,12.
Answer Details
To find the median of a set of numbers, the first step is to arrange the numbers in ascending order (from smallest to largest).
The given numbers are: 14, 13, 29, 15, 13, 17, 12.
Arrange them in ascending order: 12, 13, 13, 14, 15, 17, 29.
The median is the number that appears in the middle of this ordered list. Since there are 7 numbers in this list, the middle number is the fourth one.
In the ordered sequence 12, 13, 13, 14, 15, 17, 29, the median is 14.
Question 15 Report
The formular (N + 1)/2 is used to determine the
Answer Details
The formula (N + 1)/2 is used to determine the median position in a dataset that is arranged in ascending or descending order. Understanding how to find the median is important because the median is a measure of central tendency that represents the middle value of a dataset. Here's a clear explanation of this concept:
When you have a set of numbers, the median is the number that falls in the middle when the numbers are arranged in either increasing or decreasing order. To find this middle value, you can use the formula (N + 1)/2, where N represents the total number of observations in the dataset.
For example, let's say you have a dataset with an odd number of observations: 3, 5, 7. Here, N is 3, so you apply the formula:
Median position = (3 + 1)/2 = 2
This calculation indicates that the second number in this ordered list is the median, which is 5.
If you have an even number of observations, such as 2, 4, 6, 8, you would calculate the median position as follows:
Median position = (4 + 1)/2 = 2.5
In this case, because 2.5 isn't an integer, the median is the average of the second and third numbers, which are 4 and 6. Therefore, the median is (4 + 6)/2 = 5.
In summary, the formula (N + 1)/2 is used to identify the position of the median in a list of numbers that are ordered, allowing us to understand where the middle point of the data lies.
Question 16 Report
From the diagram below, moving from point A to B and from B to c is due to
Answer Details
Opportunity cost is a key concept in economics that refers to the value of the next best alternative forgone when making a choice. It plays a significant role in determining the downward shift in the production possibilities curve (PPC).
The PPC represents the different combinations of two goods or services that an economy can produce given its limited resources and technology. It illustrates the trade-offs that occur when resources are allocated between the production o different goods.
When there is a downward shift or inward shift in the PPC, it indicates a decrease in the economy's productive capacity. This shift can be influenced by several factors, including changes in resource availability, technology, or the efficiency of resource allocation. However, opportunity cost can help explain how these factors lead to a downward shift.
Question 17 Report
Which of the following is NOT a function of the IMF?
Answer Details
The International Monetary Fund (IMF) is an international organization that primarily focuses on ensuring the stability of the international monetary system. Here are some of its core functions:
The statement that is NOT a function of the IMF is "assisting member countries in printing and issuing their currency." The IMF does not assist countries in printing or issuing their currency. This activity is typically managed by each country's own central bank or monetary authority. Thus, this function does not fall under the responsibilities of the IMF.
Question 18 Report
An industry engaged in the extraction of raw materials and its conversion into semi-finished goods is called industry.
Answer Details
Processing involves transforming raw materials or inputs into more refined or semi-finished products. This can include various stages of production, such as refining, manufacturing, assembly, or other forms of processing.
The processing industry plays a vital role in taking raw materials from their natural state and converting them into products that can be used for further processing or consumed by end-users. This industry typically adds value to the rav materials by applying different processes, technologies, and expertise.
NOTE: Although manufacturing is involved in the production of goods, it does not specifically address the extraction of raw materials. Manufacturing encompasses a broader range of industries involved in producing finished goods from raw materials, components, or parts.
Question 19 Report
Producers operating in a free market economy are more efficient as a result of
Answer Details
In a free market economy, multiple producers are allowed to enter the market and compete with each other. This competition creates incentives for producers to become more efficient in order to gain a competitive advantage. When producers compete, they strive to offer better quality products, lower prices, and improved customer service. To achieve these goals, they need to find ways to reduce costs, increase productivity, and innovate. The pressure of competition encourages producers to constantly improve their efficiency to attract customers and maximize profits
Question 20 Report
The problem of "how to produce" in any economy is solved by
Answer Details
In any economy, the problem of "how to produce" is essentially about deciding the best way to combine resources to produce goods and services. This challenge can be effectively addressed by adopting the least cost method of production.
Here’s why:
In summary, while other methods and managerial skills are important, addressing how to produce in the most efficient and effective way often boils down to using the least cost method of production, thereby ensuring optimal resource use and economic stability.
Question 21 Report
A market situation with few sellers and many buyers is called
Answer Details
The market situation you are referring to is called an oligopoly.
To put it simply, an oligopoly is a market structure where there are only a few sellers, or producers, who dominate the market, while there are many buyers. This creates a situation where the few sellers have significant control over the prices and market dynamics.
This structure is different from a perfect competition, where there are many sellers and buyers, with no single seller having significant market power. It is also different from a duopoly, which specifically refers to exactly two sellers.
The presence of a small number of sellers in an oligopoly leads to competitive strategies where the actions of one seller can influence the actions of others. This often results in strategic collaboration or competition, which affects prices and product offerings.
Question 22 Report
Wholesalers play an important in the distribution of goods and services because they
Answer Details
Wholesalers play a significant role in the distribution of goods and services for several key reasons:
1. Bulk Purchasing and Distribution: Wholesalers buy large quantities of goods from producers and sell them in smaller lots to retailers, which allows them to benefit from economies of scale. This bulk buying helps keep costs low for retailers and ultimately consumers.
2. Bridging the Gap: By acting as an intermediary between producers and retailers, wholesalers play a crucial role in the supply chain. They enable manufacturers to focus on production while handling the complexities of distribution and logistics.
3. Financial Support: Wholesalers sometimes provide credit to retailers, allowing them to purchase goods and pay later. They also assist producers by buying inventory upfront, providing necessary funds for the producers to continue their business.
4. Information Exchange: Wholesalers gather market trends and feedback from retailers and share this information with producers. This helps producers adjust their products to meet consumer demands more effectively.
5. Inventory Management: Wholesalers manage storage and inventory, reducing the burden on manufacturers and retailers. They ensure a steady supply of products, minimizing the risk of stockouts or overproduction.
In summary, wholesalers are essential in the distribution network because they facilitate product flow, support financial operations, manage distribution logistics, and collect market intelligence.
Question 23 Report
The following can be used to improve a country's balance of payment EXCEPT
Answer Details
The balance of payments is a record of all financial transactions made between consumers, businesses, and the government in one country with others. It includes trade in goods and services, investments, and money transfers. To improve a country's balance of payments, particularly the trade balance, countries may implement certain policies.
Anti-dumping policies are used to prevent foreign companies from selling goods at a price lower than their market value to gain an unfair advantage. By implementing anti-dumping policies, a country can protect its domestic industries from unfair competition, which can help improve the balance of payments by reducing imports or encouraging domestic consumption.
Granting subsidies to export producers can help improve the balance of payments by making domestic products cheaper and more competitive in international markets. By lowering production costs, subsidies can help increase exports, leading to an improvement in the balance of payments.
Increasing import duties is another way to improve the balance of payments. By imposing higher taxes on imported goods, a country can discourage imports and encourage consumers to purchase domestically produced goods. This can improve the trade balance by reducing the outflow of money used to purchase foreign products.
On the other hand, decreasing taxation on personal income doesn't directly affect the balance of payments. Reducing personal income tax may increase disposable income for consumers, which could lead to more consumption. However, this increased consumption might not necessarily focus on domestic goods, and could instead lead to higher imports. Therefore, among the options listed, decreasing taxation on personal income is the one least likely to directly improve a country's balance of payments.
Question 24 Report
An economy in which decision of what to produce is taken partly by private individuals and state is referred to as Economy.
Answer Details
An economy in which decisions about what to produce are taken partly by private individuals and partly by the state is referred to as a Mixed Economy.
In a Mixed Economy, there is a combination of both private sector and public sector involvement. This structure allows private individuals to own businesses and make decisions about what to produce based on market demands and profitability. At the same time, the government also plays a significant role in economic decision-making, often by regulating certain industries or directly providing goods and services. The balance between these two forces aims to combine the benefits of both market dynamism and government oversight.
Here's a brief explanation of other economic systems to provide contrast:
In summary, a Mixed Economy represents a blend that includes elements of both market-driven and government-directed decisions, which sets it apart from other economic types.
Question 25 Report
In income determination theory, acceleration principles shows that
Answer Details
In income determination theory, the acceleration principle suggests that investment is the primary driver or cause, whil income is the resulting effect. The acceleration principle states that changes in investment levels lead to amplified or accelerated changes in income.
The acceleration principle posits that changes in investment levels have a multiplier effect on income. When investment increases, it leads to increased production, employment, and income generation.
Question 26 Report
The following are problems of development planning in Nigeria EXCEPT
Answer Details
Nigeria, like many developing countries, faces several challenges in its development planning. These include issues such as inadequate capital, which limits the ability to fund critical development projects and infrastructure, thus hindering economic growth. Another significant challenge is the inadequate statistical data, which affects the ability to make informed, evidence-based policy decisions. Without reliable data, it's difficult to plan effectively and measure progress.
Poor implementation of economic planning is also a notable problem, as even the best-laid plans cannot yield results if not properly executed. This might be due to bureaucratic inefficiencies, corruption, or lack of capacity.
However, the statement under-population is not a commonly recognized problem in Nigeria. In fact, Nigeria is known for having a large and rapidly growing population, which sometimes poses its own challenges in terms of resource management and service provision. Therefore, the issue of under-population can be seen as an exception to the typical problems of development planning in Nigeria.
Question 27 Report
When an economy is having a balance of payment surplus the best alternative opened to it is to
Answer Details
When an economy is experiencing a balance of payments surplus, it means that the country is exporting more goods, services, and capital than it is importing. Essentially, there is more money flowing into the country than out of it. In such situations, one of the most viable actions to take is to increase its foreign reserves.
Here's why increasing foreign reserves is often the best option:
Promoting imports, while it can help reduce the surplus by encouraging money to flow out of the country, may not always be the best course of action and depends on the country's economic goals and import needs. Borrowing from abroad is generally not necessary when the country has a surplus. Devaluing the currency is certainly not favorable in the context of a surplus as it can create inflationary pressures and reduce purchasing power internationally.
Question 28 Report
The formular used by the Expenditure approach to calculate National income is
Answer Details
The expenditure approach is a common method used to calculate the national income, specifically the Gross Domestic Product (GDP) of a country. This approach sums up all expenditures or spending in the economy.
The correct formula for the expenditure approach is: Y = C + I + G + (X - M), where:
Putting it all together, this formula helps to calculate the total economic activity within a country by summing up consumption, investment, government spending, and net exports, giving a comprehensive picture of the national income.
Question 29 Report
The system of farming which involves the use of a large hectare of land planted with economic crops is known as
Answer Details
The system of farming that involves the use of a large hectare of land planted with economic crops is known as plantation farming.
Explanation: Plantation farming is an agricultural system where a single crop is grown extensively over a large area. This system is specifically designed for the cultivation of high-demand crops, often termed as "economic crops," because they are produced for their commercial value rather than for direct consumption by the farmers. Such crops include coffee, tea, rubber, sugarcane, cotton, and palm oil.
Key Characteristics of Plantation Farming:
In contrast, smaller or subsistence farmers often engage in diverse cropping systems with multiple types of plants cultivated for personal or local consumption. Plantation farming, on the other hand, is designed to produce large quantities of a specific, economically valuable crop to meet regional or global demands.
Question 30 Report
From the diagram below, the equilibrium wage rate is
Answer Details
The equilibrium wage rate is achieved when the demand for labour equals the supply of labour in a particular labour market. At this point, there is no excess demand or excess supply of labour, and the market is in balance.
From the diagram above, the equilibrium wage rate is W2.
Question 31 Report
Which of the following is NOT a function of marketing boards in Nigeria?
Answer Details
In Nigeria, marketing boards were established to regulate and promote agricultural products. Their primary functions include activities like grading farm produce to ensure quality standards and marketing farm produce by finding markets where these products can be sold. They are also responsible for fixing prices for farm produce to stabilize farmers' incomes and protect them from market fluctuations.
However, one activity that marketing boards do not typically perform is the importation of farm produce. Marketing boards are mainly concerned with the domestic production and distribution of local agricultural products, whereas the importation would fall under international trade domains and different regulatory agencies. Thus, the importation of farm produce is not a usual function of marketing boards in Nigeria.
Question 32 Report
A price floor is usually fixed
Answer Details
A price floor is a **minimum price** set by the government for a particular good or service. It is designed to ensure that the price is not too low, often supporting producers by maintaining their income at a viable level.
For a price floor to be effective, it is usually fixed **above the equilibrium price.** Here's why:
Therefore, a price floor is usually fixed **above the equilibrium and causes surpluses.** This allows it to serve its purpose of protecting producer revenues while potentially benefiting certain industry stakeholders.
Question 33 Report
In the long-run, a firm must shut down if its average revenue is
Answer Details
In the long-run, a firm must shut down if its average revenue is less than its average variable cost. This is because the firm is unable to cover even its variable costs, which are the costs it incurs when it produces any output at all. Let me explain further:
To put it simply, if average revenue is less than average variable cost, the firm can't sustain itself in the long-run, and shutting down is a rational decision.
Question 34 Report
The diagram belwo, shows the relationship between
Answer Details
The relationship shown in the diagram is most likely related to the **wage rate and unemployment.** Let me explain this relationship clearly:
The **wage rate** refers to the payment workers receive for their labor, typically expressed on an hourly, daily, or yearly basis. The **unemployment rate** is the percentage of the labor force that is jobless and actively looking for work.
When the **wage rate** offered in the market is above the equilibrium wage (where the supply of labor equals the demand for labor), firms may choose to hire fewer workers as it becomes more expensive to employ labor. This can lead to an **increase in unemployment**. Conversely, if the wage rate is lower, firms are more likely to hire additional workers, possibly decreasing unemployment.
Understanding this relationship is crucial in comprehending how wage policies can influence employment levels. Wage increases that are not aligned with productivity may result in higher costs for employers, potentially resulting in a reduction of jobs available, hence increasing unemployment. Therefore, there is a delicate balance between setting wage levels and maintaining employment levels in the economy.
Question 35 Report
If government in a fiscal year has its revenue receipts less than the expenditure, such country is having
Answer Details
When a government has its revenue receipts less than the expenditure in a fiscal year, the country is experiencing a deficit budget. Here's a simple explanation:
Revenue receipts are the funds government receives, mainly from taxes and other sources like fees, interests, etc.
Expenditure refers to the total amount of money the government spends on various needs like infrastructure, education, defense, welfare programs, and salaries.
If the money received (revenue receipts) is less than the money spent (expenditure), it indicates that the government is spending more than it is earning. This excess expenditure generates a gap which is known as a deficit.
To address this deficit, governments might need to borrow money or reduce spending to balance their finances in the future. Hence, when expenditure surpasses revenue, it results in a deficit budget.
Question 36 Report
If the standard deviation of a set of numbers is 3.6, what is the variance?
Answer Details
The **variance** of a set of numbers is a measure of how much the numbers in the set differ from the mean (average) of the set. It is calculated as the average of the squared differences from the mean.
The **standard deviation** is simply the square root of the variance. It gives a measure of how spread out the numbers in the set are, using the same units as the original numbers.
Given that the standard deviation of a set of numbers is **3.6**, you can find the variance by squaring the standard deviation. This is because the variance is the square of the standard deviation.
So you calculate the variance as follows:
Variance = (Standard Deviation)2 = **3.6** x **3.6** = **12.96**
So the **variance** is **12.96**.
Question 37 Report
The largest component of national income in developing countries consist of
Answer Details
In developing countries, the largest component of national income typically consists of wages and salaries. This means that the income earned by individuals from their employment or labor work forms a significant part of the national income. Several reasons contribute to this:
In contrast, components like rent and profit tend to form a smaller component of national income in developing economies. While these components are important, they are usually not as predominant as wages and salaries due to the lesser commercialization and capital-intensive industries compared to developed countries.
Question 38 Report
The following are the objectives of agricultural policies in Nigeria EXCEPT
A. provision of food
B. provision of agricultural raw materials to industrial sectors
C. increasing prices of agricultural Inputs
D. creation of rural employment
Answer Details
Nigeria's agricultural policies are fundamentally designed to enhance and support the agricultural sector for the overall benefit of its economy and citizens. Let's analyze the objectives given:
Therefore, the statement that does not align with the typical objectives of agricultural policies in Nigeria is the increasing prices of agricultural Inputs. Instead, policies are often geared towards making inputs more affordable to support agricultural growth.
Question 39 Report
If two bags of rice were sold for #1,250 a month ago and two weeks later, the same amount was used to procure one bag. This simply means that the value of money is
Answer Details
In this scenario, the price of rice has increased relative to the amount of money (N1,250) that could be used to purchase it. Initially, N1,250 could buy two bags of rice, but after two weeks, the same amount can only buy one bag.
This decrease in purchasing power demonstrates that the value of money has declined. In other words, the same amount of money can now buy fewer goods or services than before. This situation is often referred to as inflation, where the general price level of goods and services rises over time, reducing the purchasing power of money.
Question 40 Report
If the marginal utility of commodity is equal to its price, then
Answer Details
To understand the concept of marginal utility and price, let's delve into a simple explanation. Marginal utility refers to the additional satisfaction or utility that a consumer gains from consuming one more unit of a good or service. Meanwhile, the price of a commodity is what the consumer pays to acquire that good or service.
In economic terms, a consumer is said to be in equilibrium when they have allocated their resources in such a way that they get the most satisfaction or utility from their consumption. The consumer equilibrium condition is achieved when the marginal utility per unit of expenditure is the same for all commodities.
Therefore, when the marginal utility of a commodity is equal to its price, it means the consumer is maximizing their satisfaction with the resources available. The consumer has no incentive to change the consumption bundle because they are already getting the highest possible satisfaction. In other words, the consumer is getting just as much utility from the last unit of the good as it costs. Consequently, the consumer is in equilibrium.
Thus, the correct explanation is: The consumer is in equilibrium.
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