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The Fundamentals of Economics
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Definition of Economics
It is the social science that studies how to use scarce (limited) resources to satisfy the unlimited human needs. Economics examines how Individuals, institutions, and society make choices under conditions of scarcity.
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Scarcity Is a fundamental problem faced by all economies. Not enough resources are available to produce all the goods and services that people would like to consume. Scarcity restricts options and demands choices. Because we “can’t have it all,” we must decide what we will have and what we must forgo.
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Resources Are factors of productions (inputs) because they are used to produce the goods and services (outputs) that people desire. Resources consist of: Natural resources such as land. Land includes all natural resources (“gifts of nature”) used in the production process, such as forests, mineral and oil, and water resources
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Human resources such as labor
Human resources such as labor. Labor consists of the physical and mental talents of individuals used in producing goods and services. Manufactured resources such as capital, machinery, and buildings.
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Macroeconomics and Microeconomics
Microeconomics: is the branch of economics concerned with the behavior of individual units such as a person, a household, a firm, or an industry. At this level of analysis, the economist observes the details of an economic unit, or very small segment of the economy such as: Decision making by individual customers, workers, households, and business firms. The price of a specific product. The number of workers employed by a single firm. The revenue or income of a particular firm or household, or the expenditures of a specific firm, government entity, or family.
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Macroeconomics: is the branch of economics concerned with the overall performance of the economy or its basic subdivisions or aggregates, such as the government, household, and business sectors. An aggregate is a collection of specific economic units treated as if they were one unit. In using aggregates, macroeconomics seeks to obtain an overview, or general outline, of the structure of the economy and the relationships of its major aggregates.
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Macroeconomics speaks of such economic measures such as:
Total level of production (output). Total level of employment. The national income. Aggregate expenditures. the general level of prices in analyzing various economic problems.
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Positive and Normative Economics
Positive economics: Describes the facts and behavior in the economy. It includes description, theory development, and theory testing (theoretical economics). Positive economics avoids value judgments, tries to establish scientific statements about economic behavior, and deals with what the economy is actually like. So, Positive economics deals with factual statements (“what is”).
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Normative economics: involves value judgments about what the economy should be like or what particular policy actions should be recommended to achieve a desirable goal (policy economics). Normative economics looks at the desirability of certain aspects of the economy. So, normative economics involves value judgments (“what ought to be”).
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