Economics 2010:Principles of MicroeconomicsWhat is Economics?2 main branches of economicsWhat is the economy?Economic Modeling:How do we go about studying the “problem”How do we go about solving these problems?Decisions/Decision MakersWhat decisions?Where do they make these decisions?Spectrum of Economic Systems - Market CoordinationEconomic Policy/GoalsFactors of ProductionFactors of Production IIOpportunity costOpportunity Cost IIEconomics 2010:Principles of MicroeconomicsIntroduction to the CourseWhat is Economics?• Definition: Economics is a social science concerned chiefly with the way society employs its limited resources, which have alternative uses, to produce goods and services for present and future consumption. We can rewrite this to be:• 1) Economics is the study of the choices people make to cope with scarcity. --OR--• 2) Economics is the study of how people cope with the problem of limited resources and unlimited wants.2 main branches of economics• Macroeconomics – A broad perspective -national/global economy - way various sectors of the economy relate to each other • Microeconomics – A close-up view -concentrate on decisions by individual consumers and firmsWhat is the economy?• Definition: The economy is a mechanism that provides us the method to allocate these scarce resources among the possible uses.Economic Modeling:How do we go about studying the “problem”• 2 types of statements that we will be dealing with Positive statement – “what is” • - can be correct/incorrect • - can be tested scientifically • - “value free” • Normative statement – “what ought to be” • - based on faith/values • - cannot be tested scientificallyHow do we go about solving these problems?1) Develop Economic Models - theoretical framework - relationship between variables - based on assumptions - simplify real-world 2) Develop TheoriesDecisions/Decision MakersWho makes the above decisions in the economy? 1) Households 2) Firms 3) GovernmentsWhat decisions?1) Who? 2) What? 3) Where? 4) When? 5) How?Where do they make these decisions?Definition: A market is any agreement that allows buyers and sellers to do business.The major markets that we will be dealing with in this course are: • 1) goods market • 2) factor (of production) marketSpectrum of Economic Systems -Market Coordination1) Pure market economy 2) Command economy 3) Mixed economy These systems determine the decisions made by each market participantEconomic Policy/Goals• Every economy has a set of objectives -goals that it wishes to meet • Economic Policy - government action to improve the attainment of these goals • Economic Goals 1)Economic efficiency 2) Equity3)Stability 4) GrowthFactors of Production• 4 main factors of production 1) Land 2) Labor 3) Capital 4) Entrepreneurial talentFactors of Production II• Each of these factors is "paid" to be used/consumed - this is called the "return to the factor of production" • 1) Land - rent • 2) Labor - wages • 3) Capital - interest • 4) Entrepreneurial talent - profitOpportunity cost• From our definition of economics, we know that when we make choices, we face costs • Definition: Opportunity costis the cost in choosing in the face of scarcity - it is the value of the benefit that is forgone by choosing one alternative rather than another.Opportunity Cost II•Note: 1) Opportunity cost is NOT money cost 2) Opportunity cost includes the value of time 3) Opportunity cost does not always remain the sameNote: The principle of substitution states that, as opportunity costs change, individuals may choose to substitute one action for another action that has a lower opportunity