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Wednesday, April 11, 2018

INTRODUCTION TO ECONOMICS By stewart Mbegu and Kulwa Guyashi


Meaning of Economics

There are many definitions of Economics; No one has ever succeeded in neatly defining the scope of economics. Many have agreed with Alfred Marshall, leading 19th-century English economist, that economics is “a study of mankind in the ordinary business of life; it examines that part of individual and social action which is most closely connected with the attainment, and with the use of the material requisites of wellbeing”—ignoring the fact that sociologists, psychologists, and anthropologists frequently study exactly the same phenomena.

Another definition of Economics says: Economics is the social science that studies the production, distribution, and consumption of goods and services. The term economics comes from the Greek for oikos (house) and nomos (custom or law), hence "rules of the house(hold)."

Another defined Economics as the social science that examines how people choose to use limited or scarce resources in attempting to satisfy their unlimited wants.

A definition that captures much of modern economics is that of Lionel Robbins in a 1932 essay: "the science which studies human behaviour as a relationship between ends and scarce means which have alternative uses." Scarcity means that available resources are insufficient to satisfy all wants and needs. Absent scarcity and alternative uses of available resources, there is no economic problem. The subject thus defined involves the study of choices as they are affected by incentives and resources.

Generally, economics deals with the production of goods, distribution of goods and consumption of goods.

Key words from the above definitions are:
Ø  Human behavior
Ø  Scarcity
Ø  Choice
Ø  Wants and needs

Areas of economics

Areas of economics may be classified in various ways, but an economy is usually analyzed by use of microeconomics or macroeconomics.

Microeconomics

Main article: Microeconomics
Microeconomics examines the economic behavior of agents (including individuals and firms) and their interactions through individual markets, given scarcity and government regulation. A given market might be for a product, say fresh corn, or a factor of production, say bricklaying. The theory considers of quantity demanded by buyers and quantity supplied by sellers at each possible price per unit. It weaves these together to describe how the market may reach equilibrium as to price and quantity or respond to market changes over time. This is broadly termed demand-and-supply analysis. Market structures, such as perfect competition and monopoly, are examined as to implications for behavior and economic efficiency. Analysis often proceeds from the simplifying assumption that behavior in other markets remains unchanged, that is, partial-equilibrium analysis. General-equilibrium theory allows for changes in different markets and aggregates across all markets, including their movements and interactions toward equilibrium.
Generally specific areas of micro economics are:
  • Economic reasoning
  • Economic insight – concerned as if economics is a science or an art.
  • Economic terminologies

MacroeconomicsMain article: Macroeconomics

Macroeconomics examines the economy as a whole "top down" to explain broad aggregates and their interactions. Such aggregates include national income and output, the unemployment rate, and price inflation and sub aggregates like total consumption and investment spending and their components. It also studies effects of monetary policy and fiscal policy.

Related fields, other distinctions, and classifications

International economics

International trade studies the determinants of the flow of goods and services across international boundaries. International finance is a macroeconomic field which examines the flow of capital across international borders, and the effects of these movements on exchange rates. Increased trade in goods, services and capital between countries is a major effect of contemporary globalization.

Labour economics

Main article: Labour economics
Labour economics seeks to understand the functioning of the market and dynamics for labour. Labour markets function through the interaction of workers and employers. Labour economics looks at the suppliers of labour services (workers), the demanders of labour services (employers), and attempts to understand the resulting patterns of wages and other labour income and of employment and unemployment, Practical uses include assisting the formulation of full employment of policies.

Managerial economics

Main article: Managerial economics
Managerial economics applies microeconomic analysis to specific decisions in business firms or other management units. It draws heavily from quantitative methods such as operations research and programming and from statistical methods such as regression analysis in the absence of certainty and perfect knowledge. A unifying theme is the attempt to optimize business decisions, including unit-cost minimization and profit maximization, given the firm's objectives and constraints imposed by technology and market conditions.

Public finance

Main article: Public finance
Public finance is the field of economics that deals with budgeting the revenues and expenditures of a public sector entity, usually government. The subject addresses such matters as tax incidence (who really pays a particular tax), cost-benefit analysis of government programs, effects on economic efficiency and income distribution of different kinds of spending and taxes, and fiscal politics.

Welfare economics

Main article: Welfare economics
Welfare economics is a branch of economics that uses microeconomic techniques to simultaneously determine the allocative efficiency within an economy and the income distribution associated with it. It attempts to measure social welfare by examining the economic activities of the individuals that comprise society.

A short Historical development of economics


The effective birth of economics as a separate discipline may be traced to the year 1776, when the Scottish philosopher Adam Smith published An Inquiry into the Nature and Causes of the Wealth of Nations. There was, of course, economics before Smith: the Greeks made significant contributions, as did the medieval scholastics, and from the 15th to the 18th century an enormous amount of pamphlet literature discussed and developed the implications of economic nationalism (a body of thought now known as mercantilism). It was Smith, however, who wrote the first full-scale treatise on economics and, by his magisterial influence, founded what later generations were to call the “English school of classical political economy,” known today as classical economics

The Importance of Economics


I would suggest the main importance of economics is helping society decide the optimal allocation of our limited resources.
In particular economics is important in these areas:


How to manage the macro economy.
Economists can advise governments how to manage the economy and avoid inflation and unemployment. Both hyper inflation and mass unemployment can be devastating for society. Economists argue that both can be avoided through careful economic policies.
However, the problem is that economists may often disagree on the best solution to these problems. For example, at the start of the great depression in 1930, leading economists in the UK Treasury suggested that the UK needed to balance the budget. (This led to the fall of the Labour government as the Prime Minister Ramsay McDonald was one of the few Labour MPs who agreed to the economists suggestions to cut unemployment benefits and increase tax. As you might expect this Classical approach only made the great depression worse.

The Great Depression led to John Maynard Keynes developing his general theory of Employment, income and money, arguing that classical economics had the wrong approach for dealing with depressions. Keynes argued that the economy needed to expansionary fiscal policy.
Overcoming Market Failure.
Generally it is considered that free markets offer a better solution than a planned economy (Communist) However, free markets invariable lead to problems such as the over production of negative externalities (pollution) and underproduction of goods with positive externalities (education, health care, public transport). An economist can suggest policies to overcome these market failures.
Note: these policies are often politically unpopular and may not get implemented, but they show possible solutions to social problems. For example:

Efficiency
Another area where economists have a role to play is in improving efficiency. For example economists may suggest supply side policies to improve the efficiency of an economy.
Individual Economics.
Economics is also important for an individual. For example, every decision we take involves an opportunity cost - which is more valuable working overtime or having more leisure time?
Future Issues in Economics
Economics is constantly evolving. For example, in the future economic issues will involve:

Economic problem

The economic problem, sometimes called the fundamental economic problem, is one of the fundamental economic theories in the operation of any economy. It asserts that there is scarcity, that the finite resources available are insufficient to satisfy all human wants. The problem then becomes how to determine what is to be produced and how the factors of production (such as capital and labour) are to be allocated. Economics revolves around methods and possibilities of solving the economic problem.

Overview

The economic problem is most simply explained by the question "How do we satisfy unlimited wants with limited resources?" The premise of the model of the economic problem is that human wants are constant and infinite due to the constantly changing demands (often closely related to changing demographics) of the population. However, resources in the world to satisfy human wants are always limited to the amount of natural resources or human resources (human capital) available. The economic problem, and methods to curb it, revolves around the idea of choice in prioritizing which wants can be fulfilled first. Due to scarcity that is why we are having economic and social problems such as:
·         Unemployment
·         Poverty
·         Income inequalities
·         Global financial crisis etc
·          
Economic reasoning

Economics as a contemporary discipline relies on rigorous styles of argument. Objectives include formulating theories that are simpler, more fruitful, and more reliable in their explanatory power than other theories. Often analysis begins with a simple model to isolate relations of a variable to be explained. Complications may be impounded in a ceteris paribus ("other things equal") assumption. For example, the quantity theory of money hypothesizes a positive relationship between the price level and the money supply, ceteris paribus. The theory can be tested using economic data, such as a price index for GDP and a measure of the money supply, say currency plus bank deposits. Econometric methods can allow for the influence of competing explanations and attempt to adjust for noise from other variables in the absence of a controlled experiment. More recently, the use of experimental methods in economics has greatly expanded, challenging a historically-noted differentiating feature of some natural sciences from economics.  Generally, the basic fundamental basics in economic reasoning are costs and choices. In cost note that nothing is free in this world and in scarcity depends on the alternatives.

Economics is NOT  Natural Science!
(It is technology of Social Science.)

Science is a process of formulating models that predict outcomes in a natural system under certain conditions, and then testing them to see if the future predictions agree. However, the goal is to find how the model is inadequately representing the natural system. When the model is refuted, it is adjusted to form a new model from what is learned about the system. Since there is an underlying system that is being approximated by the models, there is an "objective reality" (exists independently of human conceptualization) to be described by conceptual models. The models evolve representations of the relationships and features that are defined by the system. Models are useful to humans. Models are respected when they better reflect the nature of the system.
Since Descartes we have approached the task of developing models as if the systems were mechanical. This means that the properties of one part are inherent in its composition and individual properties, unaffected by the surroundings. We can study the whole system a part at a time, assemble what we have learned into a more comprehensive model. The more extensive the parts and the quality of the model's components, the better model should become.
As complex systems have been recognized and are being studied, we are beginning to appreciate that both living and physical systems are not well approximated by Cartesian approaches. A model composed of parts that are independently describable is inadequate because the system has extensive interactions among the components. Therefore, the features of a part of the system are partly determined by the components, and partly determined by the conditions surrounding the components. That is, the components have properties that partly depend on the context in which they exist. To understand responses we need to consider the entire system at once.
Nevertheless, the reality of science is a physical universe with underlying determinable properties. Only our approach to study reflects the difference between Cartesian science and complex systems. In complex systems, the system evolves and there is an "arrow of time" that prevents "retro-dictions" (predicting the conditions in the past that led to present states) and long range pre-dictions are impossible.
On the other hand economics is an artifact of human imagination, and the agreement among certain humans who "play the games" together -- thereby it is a social technology. There is no underlying physical reality other than what is identified by the players to be components. Granted, the interactions within the system may be complex, and the economic properties are determined by what people study. Nevertheless, in the economic properties are determined by and limited only by the beliefs of the "players." To build economic models one must assume certain features, and the models become part of the generators of the results. Since they are not inherently tied to the physical and biological realities, they may fail arbitrarily as the physical and biological world view of humans change -- or as people believe the physical and biological world exists. Economics in large part reflects human belief systems. When physical and biological constraints become seriously constrained for humans, economics becomes irrelevant. The game ends.
Positive and Normative Economics

Positive economics

Positive economics is the branch of economics that concerns the description and explanation of economic phenomena. It focuses on facts and cause-and-effect relationships and includes the development and testing of economics theories.
Positive economics as science concerns analysis of economic behavior. Positive economics as such avoids economic value judgements. For example, a positive economic theory might describe how money supply growth affects inflation, but it does not provide any instruction on what policy ought to be followed.
Still, positive economics is commonly deemed necessary for the ranking of economic policies or outcomes as to acceptability, which is normative economics. Positive economics is sometimes defined as the economics of "what is",
To illustrate, an example of a positive economic statement is as follows:
  • The price of milk has risen from $3 a gallon to $5 a gallon in the past five years.
This is a positive statement because it can be proven true or false by comparison against real world data. In this case, the statement focuses on facts.

Normative economics

Normative economics is the branch of economics that incorporates value judgments (that is, normative judgements) about what the economy ought to be like or what particular policy actions ought to be recommended to achieve a desirable goal. Normative economics looks at the desirability of certain aspects of the economy. It underlies expressions of support for particular economic policies.
It is common to distinguish normative economics ("what ought to be" in economic matters) from positive economics ("what is"). But many normative (value) judgments are held conditionally, to be given up if facts or knowledge of facts changes, so that a change of values may be purely scientific. This undermines the common distinction. But Sen distinguishes basic (normative) judgments, which do not depend on such knowledge, from nonbasic judgments, which do. He finds it interesting to note that "no judgments are demonstrably basic" while some value judgments may be shown to be nonbasic. This leaves open the possibility of fruitful scientific discussion of value judgments.
To illustrate, an example of a normative economic statement is as follows:
  • The price of milk should be $6 a gallon to give dairy farmers a higher living standard and to save the family farm.
This is a normative statement because it depends on value judgments and cannot be proven true or false by comparison against real world data. This specific statement makes the judgment that farmers need a higher living standard and that family farms need to be saved. Consumers who purchase more expensive milk products might argue otherwise.
SOME IMPORTANT ECONOMIC TERMS

WANTS
Any human desire is known as want or end.
Wants differ in different places and times, wants can be basic wants or secondary wants
  • Basic wants – Are those which are necessary for human existence e.g. fresh air, food, clothes, accommodation.
  • Secondary wants – These wants which are not very essential fro survival of human beings but satisfaction of these wants improve s the standard of living and human being feel more comfortable and happy e.g. TV, jewellery, cars etc.

Characteristics of Wants

  • Wants are unlimited in number
  • Particular wants can be fully satisfied e.g. food
  • Wants are alternative ( or competitive)
  • Wants are complimentary
  • Wants vary in urgency and intensity
  • Wants are felt again and again

GOODS

A good is any thing that satisfies human want and that has exchange value.  It may be a commodity such as clothes or service such as electricity.

Types of Goods:

Free goods and Economic goods
Free goods are those things which are free in nature example air, these goods have utility but no value.  Economic goods are those which are scarce when compared to human wants and needs human efforts to acquire, example food.

Consumer/ goods and Producers’ goods
Consumer goods are directly for consumption by consumer and producer goods are the one which helps to produce consumer goods, example machinery.

Perishable goods and Durable goods
Perishable goods are the ones which can not stay longer example tomatoes and durable goods are the one which do not perish within a short period of time example furniture.

Material goods and Non material goods
Material goods are the tangible goods example car and non material good are the one which can not be touched example the service of a doctor.

WEALTH
In economics, wealth means all those goods which posses the following four qualities:
  • Utility
  • Scarcity
  • Money value
  • Capability of being transferred

Also wealth may be of three kinds:
  • Business wealth
  • Personal wealth
  • Social wealth – known as collective wealth eg roads dams etc
Economic law
These are facts of economics found correct and applicable.  They are the statements of scientific truth regarding the allocation of scarce resources means to unlimited ends.
It is a general statement of which expresses a relationship of cause and effect between any economic phenomena.  The statement of an economic law is often prepared by the phrase “other things remain constant”.

SCARCITY
Scarcity means that people want more than is available. Scarcity limits us both as individuals and as a society. As individuals, limited income (and time and ability) keep us from doing and having all that we might like. As a society, limited resources (such as manpower, machinery, and natural resources) fix a maximum on the amount of goods and services that can be produced.
Scarcity requires choice. People must choose which of their desires they will satisfy and which they will leave unsatisfied. When we, either as individuals or as a society, choose more of something, scarcity forces us to take less of something else. Economics is sometimes called the study of scarcity because economic activity would not exist if scarcity did not force people to make choices.
Law of scarcity
Law of scarcity states that economic resources are scarce this means that there are never enough at any given time to produce all things that people want.  Scarce resources can be increased it at all only through effort and sacrifice.

Economics person
Economic person is a man or woman who always acts rationally in the sense of trying to maximize his or her self interest or private benefit.

CHOICE
Due to scarcity of resources, all economic decisions involve CHOICE in terms of what to produce, How to produce and Who will receive the output that produced.  So there are three Fundamental choices and referred to as WHAT, HOW, and for WHOM.

What to Produce
Referred to as the problem of product mix since society can not have all the product it desires, it must choose what output is going to be  produced from its scarce resources.

How to Produce
Referred to as the problem of factor combination.  Whatever goods and services society choose can usually be produced in a variety of ways:

  • Capital Intensive – Uses large amount of capital relative to labour.
  • Labor Intensive – Uses large amount of labour relative to capital

For whom to produce

Referred to the problem of distribution since society can not have all the output it desires there must be some mechanism for distributing the limited amount of goods and services that it produced among consumers who in general desire more.
There are different mechanisms available:

  • Physical rationing – In this all consumers receive the same amount of goods and services for every member of the family.
  • To allocate output through the market – This allow consumers to buy whatever they can afford.

OPPORTUNITY COST

Opportunity cost is the value of the benefit that is forgone (sacrificed) by choosing one alternative rather than the other.  It is the next most desired alternative forgone.

OR

Opportunity cost or economic opportunity loss is the value of the next best alternative forgone as the result of making a decision.[1] Opportunity cost analysis is an important part of a company's decision-making processes but is not treated as an actual cost in any financial statement.[2] The next best thing that a person can engage in is referred to as the opportunity cost of doing the best thing and ignoring the next best thing to be done.
Opportunity cost is a key concept in economics because it implies the choice between desirable, yet mutually exclusive results. It is a calculating factor used in mixed markets which favor social change in favor of purely individualistic economics. It has been described as expressing "the basic relationship between scarcity and choice." The notion of opportunity cost plays a crucial part in ensuring that scarce resources are used efficiently.  Thus, opportunity costs are not restricted to monetary or financial costs: the real cost of output forgone, lost time, swag, pleasure or any other benefit that provides utility should also be considered opportunity costs.The concept of an opportunity cost was first developed by John Stuart Mill

Examples

A person who invests $10,000 in a stock denies herself or himself the interest that could have accrued by leaving the $10,000 in a bank account instead. The opportunity cost of the decision to invest in stock is the value of the interest.
A person who sells stock for $10,000 denies himself or herself the opportunity to sell the stock for a higher price in the future, inheriting an opportunity cost equal to future price minus sale price.
An organization that invests $1 million in acquiring a new asset instead of spending that money on maintaining its existing asset portfolio incurs the increased risk of failure of its existing assets. The opportunity cost of the decision to acquire a new asset is the financial security that comes from the organization's spending the money on maintaining its existing asset portfolio.

Production-Possibility Frontier (Curve)


The PPF shows the various combinations of goods that an economy can produce when its resources are fully employed.  It is a diagrammatic or graphical representation of the problem of choice.

OR
A production-possibility frontier (PPF) or "transformation curve" is a graph that shows the different rates of production of two goods that an individual or group can efficiently produce with limited productive resources. The PPF shows the maximum obtainable amount of one commodity for any given amount of another commodity or composite of all other commodities, given the society's technology and the amount of factors of production available.
Consider the case of an island economy that produces only two goods: wine and grain. In a given period of time, the islanders may choose to produce only wine, only grain, or a combination of the two according to the following table:

Production Possibility Table

Wine
(thousands of bottles)
Grain
(thousands of bushels)
0
15
5
14
9
12
12
9
14
5
15
0
The production possibility frontier (PPF) is the curve resulting when the above data is graphed, as shown below:

Production Possibility Frontier

The PPF shows all efficient combinations of output for this island economy when the factors of production are used to their full potential. The economy could choose to operate at less than capacity somewhere inside the curve, for example at point a, but such a combination of goods would be less than what the economy is capable of producing. A combination outside the curve such as point b is not possible since the output level would exceed the capacity of the economy.
The shape of this production possibility frontier illustrates the principle of increasing cost. As more of one product is produced, increasingly larger amounts of the other product must be given up. In this example, some factors of production are suited to producing both wine and grain, but as the production of one of these commodities increases, resources better suited to production of the other must be diverted. Experienced wine producers are not necessarily efficient grain producers, and grain producers are not necessarily efficient wine producers, so the opportunity cost increases as one moves toward either extreme on the curve of production possibilities.
Suppose a new technique was discovered that allowed the wine producers to double their output for a given level of resources. Further suppose that this technique could not be applied to grain production. The impact on the production possibilities is shown in the following diagram:

Shifted Production Possibility Frontier

In the above diagram, the new technique results in wine production that is double its previous level for any level of grain production.
Finally, if the two products are very similar to one another, the production possibility frontier may be shaped more like a straight line. Consider the situation in which only wine is produced. Let's assume that two brands of wine are produced, Brand A and Brand B, and that these two brands use the same grapes and production process, differing only in the name on the label. The same factors of production can produce either product (brand) equally efficiently. The production possibility frontier then would appear as follows:

PPF for Very Similar Products

Note that to increase production of Brand A from 0 to 3000 bottles, the production of Brand B must be decreased by 3000 bottles. This opportunity cost remains the same even at the other extreme, where increasing the production of Brand A from 12,000 to 15,000 bottles still requires that of Brand B to be decreased by 3000 bottles. Because the two products are almost identical in this case and can be produced equally efficiently using the same resources, the opportunity cost of producing one over the other remains constant between the two extremes of production possibilities.
USES OF PPF or PPC

  • The PPF illustrate the micro economic issues of Choice and opportunity costs.  If choose to produce one of item, you have to sacrifice the production of the other.  The fact that to produce more of one good involves producing less of the other is illustrated by downward sloping of the nature of the curve.
PPF illustrate the phenomenon of increasing opportunity costs- it means that             producing more of one good involve sacrifice over increasing amounts of the other this is due to the fact that different factors of production have different properties.
Graphically it is because of opportunity costs increases, the PPC is bowed   outward than being a straight line.
  • Resources under utilization illustrated by the point within the PPF  in which case it means that the economy is producing less or both goods that it could possibly produce either because some resources are not being used or because it is not using the most efficient methods of production possible or a combination of the two.
  • Economic growth is illustrated by the outward shift of the PPC; this is due to discovery of new materials, technological advancement, investment in new plant and machinery which will increase the stock of capital, also through education and training in which case labour become more productive.

ECONOMIC SYSTEM

Economic system is the institutional arrangement where by human and natural resources of an economy cooperate with each other to produce goods and services.

OR
Economic system is the system of production, distribution and consumption of goods and services of an economy. Alternatively, it is the set of of principles and techniques by which problems of economics are addressed, such as the economic problem of scarcity through allocation of finite productive resources. The economic system is composed of people and institutions, including their relationships to productive resources, such as through the convention of property. Examples of contemporary economic systems include capitalist systems, socialist systems, and mixed economies.
The main objective of economic system is to utilize the resources of the country in such a way that production of goods and services out of available resources may be maximized.  Economic system is comprised of Capitalism, Socialism, and Mixed economy.

The Basic tasks of every economic system

  • To determine what goods and services are required and how much of each and where (in which regions of the country and in what manner they could best be produced).
  • To allocate the aggregate or total amount of goods and services produced.
  • Replacement of capital stock used up in the course of production e.g building, equipments.
  • To decide how to distribute its total material benefits (the national income among the various members of the society in the form of wages, interest payment, rents, and profits.


Types and Features of Economic System

Economic system can be classified in terms of the mechanism which is used to solve the economic problems of allocating scarce resources amongst competing uses. i.e. the market mechanism or planning mechanism and in terms of who owns the means of production, private individual or the state. The economic system includes:

The Command / Centrally Planned /Socialist Economy

It is an economy system in which all decisions about what, how much, where and for whom to produce would be taken by central planning authority which issues all commands and directives for all the household and producers in the society.
This economy is based on the public ownership of all productive resources and complete replacement of the market prices mechanism by the central planning authority of all economic activities. Examples are Soviet union, Albania, Bulgaria, the Germany and Roman.

The characteristics of this economy:

  • Limited private ownership
  • Cooperative ownership – this covers mostly rural and non rural economic works such as production, trade etc.
  • State ownership –major means of production including land.

 Advantages of socialist economy

  • Unemployment and inflation were officially not existed
  • Social security and welfare
  • It assures social justice
  • Better allocation of resources through planning
  • Improving productive  efficiency
  • Economic growth and improving living standard without fluctuating economic activities brought about by the business cycle in western market and mixed economies.

Disadvantages of Socialist Economy

  • Bureaucratic running of the economic machinery
  • No successful in business
  • Misallocation of resources (no price mechanism)
  • Loss of personal liberty
  • Failure to bring about economic equality
  • Loss of consumer sovereignty
  • Lack of incentives to hard work and self improvement

The break of Command Economy

Strictly economic disadvantages of central planning including poor investment decision and slow growth of output per worker, persisted shortage and poor quality of consumer goods and many food stuffs, the failure and partial reform s to improve the central planning system and unfavourable economic performance in comparison to both the nature market and mixed economies in western Europe and south anti communist Asia.




Capitalism Economy
Capitalism is a system of economic organization characterized by private ownership of means of production and distribution (such as land, factories, rail etc) and their operation is for profit under predominantly competitive competitions.
It is the economic system based on the private ownership of productive resources in which goods and services are allocated through the operation of free market.

Basic Features of Capitalism economy

  • Economic freedom
  • Freedom of choice by consumer
  • Class conflict –society divided into classes for those who have and those who don’t have.
  • Profit motive
  • Economic inequalities
  • Private property
  • Self interest-The invisible hand
  • Economic individualism-Laissez faire
  • Competition or free market

Mixed economy
In the real world no country now days has economy which is exclusively based on private enterprises or collectionism.  All economies are mixed economies, some are planning of production undertaken by government directly or through its international industries and great part is left to private enterprises.
The government undertake the provision of essential services as roads, water etc and also provide the frame work of law and regulations to check harmful effects of private enterprises.

Salient Features of Mixed Economy

Both public and private sector exist and function together.  It operates both by price system and government activities.  The government adopts necessary measures to regulate and influence the private sector so that it may function for the interest of the nation rather than the exclusively in the interest of the private enterprises.  The government protects the weaker sections of the society especially labour that it saves from exploitation by the capitalist and also government take necessary steps in reduction of the inequalities of income wealth.



Questions with Answers

  1. Outline any three assumptions taken into account when analysing economic issues by using PPF.
    • Choice should be made between two goods
    • Resources factors of production are fully employed.
    • The supply of resources and state of the technology are fixed.

  1. How does PPF illustrate:
    • Opportunity cost –By downward sloping nature of the curve
    • Increasing opportunity cost – Because the PPF is bowed outward.
    • Economic growth – By the points outside the PPF or by shifting of the PPF out ward.
    • Efficient resources use – By all points along the PPF.

  1. Briefly explain the reasons for economic growth
    • Increasing in investments of plants and machinery.
    • Discovery of new raw materials
    • Technological advancement
    • Education and training. etc

  1. Briefly explain the reasons for economic shrink.
    • Some resources are not being employed
    • Not using the most efficient methods of production possible
    • Combination of all. Etc

  1. Why does more production of one good lead to sacrifice of ever increasing
amount of the other.
    • It is because economic resources differ in quality and hence are not perfectly adoptable to alternative uses.  It is due to the fact that different factors of production have different properties.  Example fertile land is more suitable for crops than the factory and unskilled farm workers are more adaptable to agriculture than to manufacturing.



Questions For Concentration

  1. Define Economics and discuss the nature of economic problems.

  1. Discuss the scope of economics.

  1. What are human wants? Discuss the characteristics and types of human wants.


  1. Write short notes on the following:
a)    Scarcity
b)    Choice
c)    Wealth
d)    Utility
e)    Opportunity cost

  1. What do you mean by goods? Discuss various types of goods

  1. What is economic system? Discuss various kinds of economic system.


  1. Distinguish between micro economics and macro economics.

  1. What does the economics mean when say the consumer is rational?


  1. ‘Economics is the science of choice’ Discuss.

  1. Scarcity is a mother of all economic problems. Discuss.


  1. What is micro economics? Explain the subject matter which is studied in microeconomics.

  1. What is production possibility curve? What assumptions are made while drawing it? And why is generally concave towards the origin?


  1. What is opportunity cost of a commodity? And why does it increase when more of it is produced?

  1. Explain what is theory? How theories differ from principles and laws?


  1. Why a production possibility frontier (PPF) is negatively sloped? And why is it bowed out?

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