Use the table below to answer questions 3 and 4. Scores (X): 0, 2, 4, 5, 6, 7, 8 Frequency (f): 7, 11, 6, 7, 7, 4, 3 In the distribution above, the mode is
A.2
B.3
C.4
D.5
E.6
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Answer: A (2)
Explanation
The mode is the score with the highest frequency: 11 students scored 2.
Which of the following will shift the demand curve for Milo to the right?
A.an increase in consumer's income
B.A rise in the price of Milo
C.a tax on cocoa producers
D.a fall in the quantity demanded of Milo
E.A fall in the price of Milo
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Answer: A (an increase in consumer's income)
Explanation
A change in Milo's own price only moves along the demand curve; higher income raises demand for a normal good at every price, shifting the curve right.
If a government which owed a company N10,000 in 1976 paid the debt fully in 1985 when the value of money had depreciated by 20 percent, such a government had
A.lost
B.been placed at par with the company
C.gained
D.stabilized the value of the money
E.increased the value of the money
Show the answer and explanation
Answer: C (gained)
Explanation
The government repaid money worth 20% less than what it borrowed, so the debtor gained and the creditor lost.
Section A: answer one question only from this section. (a) Define cross elasticity of demand (b) The table shows the response of quantity demanded to changes in price for three pairs of commodities. Use the table to answer the questions that follow. Changes in price: Bread: original price N15, new price N20; Beef: original price N25, new price N40; Butter: original price N100, new price N150 Changes in quantity demanded: Yam: original quantity 150 kg, new quantity 200 kg; Fish: original quantity 1,000 kg, new quantity 3,000 kg; Margarine: original quantity 250 kg, new quantity 400 kg Calculate the cross elasticities of demand for (i) Bread and yam; (ii) Beef and fish; (iii) Butter and margarine.
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Model answer
(a) Cross elasticity of demand is the degree of responsiveness of the quantity demanded of one commodity (X) to a change in the price of another commodity (Y) CED = % change in quantity demanded of X ÷ % change in price of Y (b)(i) % change in Qd of yam = 50/150 × 100 = 33.3%; % change in price of bread = 5/15 × 100 = 33.3%; CED = 1 (ii) % change in Qd of fish = 2,000/1,000 × 100 = 200%; % change in price of beef = 15/25 × 100 = 60%; CED = 200 ÷ 60 = 3.3 (iii) % change in Qd of margarine = 150/250 × 100 = 60%; % change in price of butter = 50/100 × 100 = 50%; CED = 60 ÷ 50 = 1.2 All three are positive, showing each pair are substitutes
Explanation
Put the quantity change of one good over the price change of the other good.
Section A: answer one question only from this section. The table below shows the sectoral allocation of a country's budget. Illustrate the data accurately with a pie-chart. Show your workings clearly. Health: N30 million Education: N25 million Housing: N15 million Manufacturing: N10 million Agriculture: N20 million
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Model answer
Total budget = 30 + 25 + 15 + 10 + 20 = N100 million Angle of each sector = amount/total × 360° Health = 30/100 × 360° = 108° Education = 25/100 × 360° = 90° Housing = 15/100 × 360° = 54° Manufacturing = 10/100 × 360° = 36° Agriculture = 20/100 × 360° = 72° Check: total = 360° Draw a circle, mark the sectors accurately with a protractor, label each sector and give the chart a title
Explanation
Convert each amount to degrees of 360 before drawing.
Section B: answer three questions only from this section. (a) What is meant by production? (b) Explain with examples, the following types of production: (i) Primary (ii) Secondary (iii) Tertiary
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Model answer
(a) Production is the creation of goods and services (utility) to satisfy human wants; it is complete only when goods reach the final consumer (b)(i) Primary production: extracting natural resources from land, sea or air, e.g. farming, fishing, mining, lumbering, hunting (ii) Secondary production: changing raw materials into finished or semi-finished goods, e.g. manufacturing (textiles, cement), construction, refining (iii) Tertiary production: providing services, both commercial (trade, banking, insurance, transport, advertising) and direct/personal services (teachers, doctors, lawyers, police)
Explanation
Define production, then give a definition and two examples for each type.
Section B: answer three questions only from this section. Give any five reasons why public corporations are established in Nigeria.
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Model answer
To provide essential services (water, electricity, rail transport) at reasonable prices To prevent private monopolies exploiting consumers Huge capital required is beyond private investors To control strategic industries for national security To provide services that are not profitable enough to attract private firms To create employment To generate revenue for government To reduce foreign domination of the economy To promote balanced regional development
Section B: answer three questions only from this section. Account for the decline in the contribution of agriculture to the Gross Domestic Product (GDP) of Nigeria.
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Model answer
The oil boom: government and people shifted attention to petroleum Rural–urban drift of young people, leaving farming to the old Use of crude tools and traditional methods; low productivity Inadequate credit and finance for farmers Poor infrastructure: roads, storage, processing Land tenure problems and fragmented holdings Poor and unstable prices for farm produce; marketing board problems Pests, diseases, drought and soil erosion Inadequate government funding and inconsistent policies Growth of other sectors (oil, services) reducing agriculture's share
Explanation
Give at least five reasons, linking each to lower farm output or share of GDP.
Section B: answer three questions only from this section. (a) What is Labour Force? (b) Explain four factors affecting the size of the labour force.
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Model answer
(a) The labour force is the number of people of working age who are able and willing to work, i.e. those employed plus those actively seeking work (b) Any four: size of the total population Age structure of the population (proportion of working age) Number of years spent in school (school-leaving age) Retirement age Attitude to women working Migration (immigration and emigration) Health of the population Wage levels and attitudes to work
Explanation
Define the labour force, then explain four factors.
Section B: answer three questions only from this section. State any five reasons why the use of money has replaced the barter system in modern economic transactions.
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Model answer
Money removes the problem of double coincidence of wants Money is a common measure of value, so prices are easy to state Money is divisible into small units, unlike many goods Money is portable and easy to carry Money is a store of value; it does not perish like many goods Money makes deferred payments (credit) possible Money encourages specialisation and large-scale trade Money makes accounting and record-keeping easy
Explanation
Each reason is a problem of barter that money solves.
Section B: answer three questions only from this section. Describe any five functions of the Central Bank of Nigeria (CBN)
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Model answer
Issues the national currency Banker to the government: keeps its accounts and advises it Banker to commercial banks (bankers' bank) Lender of last resort to banks Controls money supply and credit through monetary policy (open market operations, bank rate, reserve requirements, special deposits) Manages the country's foreign reserves and exchange rate Manages the public debt Supervises and regulates banks and other financial institutions Clearing house for cheques
Section B: answer three questions only from this section. Why does a country restrict her international trade?
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Model answer
To protect infant industries from foreign competition To correct a balance of payments deficit To raise revenue through tariffs To prevent dumping To protect local employment To prevent importation of harmful goods (drugs, arms) To conserve foreign exchange For political or strategic reasons (e.g. sanctions) To reduce dependence on foreign countries / become self-sufficient
Section B: answer three questions only from this section. Outline the role of industrialization in the economic development of Nigeria.
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Model answer
Creates employment Raises national income and standard of living Diversifies the economy away from oil and primary products Provides a market for agricultural raw materials Saves foreign exchange through import substitution and earns it through exports of manufactures Promotes technology and skills Increases government revenue through taxes Encourages development of infrastructure Reduces rural–urban drift when industries are spread out Adds value to local raw materials