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University of Toronto Scarborough
Economics for Management Studies
Gordon Cleveland

ECMA04HGordon Cleveland [email protected], (416) 287-7317 Office MW-364, Mon + wed 1-2pm Video: Sept 14, 2009lecture 01 Lectures posted on UTSC intranet every Sunday First test 25% Second test 25% Final exam 50% *7 , 8 , or 9 December Tests: mostly MC (10 choices), problem-based rather than memorization, some theory questions Tests can be wiped out if marks are lower than final, weight added to final Course based on: knowledge of basic economic theory, problem solving using theory & math Download student handbook (tutorial questions and weekly problem setsdo in a group) Microeconomics: study of individual markets ( D&S, P&Q), how decisions are made through markets to allocate resources to alternative possible uses Economics is the study of the use of scarce resources to satisfy unlimited human wants Resources (factors inputs of production) o Landincluding air o Labourhuman resource o Capitalcapital equipment, tools, machinery, factories (physical goods) Scarce and have alternative uses, therefore choices (to economize) need to be made Economic decision: what (produced)? How (to produce)? For whom (to produce)? How does a market economy make decisions o What to produce: buyers and sellers interact in output market o How (technology, labour) and for whom (who consumes): interact in input markets (markets for factors or resources) Opportunity cost: the opportunity cost of taking an action is measured by the value of the next best alternative action (ex. The value produced by the resources used if you had used these same resources in an alternative way.) o Based on scarcity, if you do sth, you have to give up sth else you might have done o Value of the alternative foregone (value of the benefit that could have been generated by the resources in their next best use) o Ex. Movies, each worth $30 (utility or satisfaction value) price of movie = $15 surplus of $15, but another opportunity cost is time o Explicit and implicit cost (both given up) o Most individuals act rationally in their economic behaviour, meaning if benefits of action X are greater than the cost, individual will take the action: B(x) > C(x), action X taken o C(x) is the opportunity cost of X (explicit + implicit) o Opportunity cost of going to Uni: explicittuition, books, transportation implicittime for jobs apartment rental, food and entertainment not included because its necessary wo Uni Sep 16, 2009lecture 02 the opportunity cost of getting married o implicit: your next best alternative, time with friends www.notesolution.comECMA04HGordon Cleveland [email protected], (416) 287-7317 Office MW-364, Mon + wed 1-2pm Video: o explicit: marriage costs opportunity cost of taking a month-long vacation o what you couldve done with that time (depend on when you take it) universities have young people because they cant make as much money yet, benefits to young people are higher adults take evening courses because they make money during the day senior citizens, teachers and university professors take holidays because they have periods of time off work with a low opportunity cost people charge interest for loans is because there is alternative uses to the money when resources are scarce, choices must be made about how these resources will be used real cost of using the resources in one way will be that you give up the output you might have gotten by using them in an alternative way economics focuses on how choices are made and their consequences are market economy: individuals make choices (demand and supply) and markets bring decisions together o tradeoffs are everywhere: there is no such thing as a free lunchMilton Friedman production possibilities frontier helps us think about choices, opportunity costs, and economic efficiency o shows a set of output possibilities possible with a fixed amount of resources o shows max possible production of each good, given the efficient production of the other good PPF shows: o allocation of resources to alternative uses o attainable region (green), unattainable (red) o economically efficient (pink) and inefficient (grey) o opportunity cost o shape: bowed outwards (resources not perfect substitutes)can be straight line in some cases o as you move along the curve, you give up less and less to gain more opportunity cost of x: OCx = -dYdX, o amount of good y given up in order to get a little more of good x (value ofthe alternative foregone) opportunity cost of y: OCy = -dXdY or -1(dYdX) o number of units of X given up when this economy produces a little bit more of Y opportunity cost may be constant along PPF o dYdX is constant, PPF is linear, d YdX = 0 Opportunity cost may be increasing along PPF o dYdX is increasing, PPF is convex or bowed outward, d YdX < 0 Ex.1 : y = 14 x6 - x 12 o Shows possible combinations of two goods (when not wasting resources) o OCx = -dYdX = -(-16-16x) = 16 + x6 o Therefore, OCx depends on the level of X produced www.notesolution.comECMA04HGordon Cleveland [email protected], (416) 287-7317 Office MW-364, Mon + wed 1-2pm Video: o Second derivative is -16, which shows increasing costs, OCx rises as X produced increase If society is able to express a value for X and Y usinglue (utility) function, we can predict the societys choice of where to locate along the PPF o Imagine a value function V = 3x + 6y o Each unit of good Y is worth twice as much as each unit of good X o sub PPF into value function: V = 3X + 6Y = 3X + 6(14 x6 x^212) = 3X + 84 X X^22 = - (X^2)2 + 2X+ 84 o dVdX = -x +2 = 0 sub x = 2 into PPF x = 2 y = 13.33 September 21, 2009lecture 03 midterm: October 17 , 5-7pm , November 20 3-5pm Demand curve: behaviour of buyers Supply curve: behaviour of sellers Equilibrium occurs when the behaviour of buyers and sellers is consistent Price brings these behaviours into equilibrium (amount buyer wants to buy matches sellers want to sell) Demand has negative slopse, supply has positive slope (positive or zero in long run) Supply in short run: with existing firms only, using existing productive capacity o If new firms enter the industry, supply shifts to the right (more supplied at each possible price) Market: a set of institutional arrangements that bring buyers and sellers together to negotiate the terms (ex. price) for exchanging goods (tangible) or services (intangible) Perfectly competitive market: o many buyers, many sellers (price takers) o product is homogeneous or standardized (little brand loyalty) o perfect information (no one is fooled) o freedom of entry and exit in long run (no barriers) producers have no market power, and price is main form of competition Law of demandnegative slope: Q = 6D0 10P, or P = 60 0.1 Q couD, be Q = 10D = -1 10P Q Ds a function of own price (P) movement along demand curve Shifts of demand curve: Q D f(P, P S PC, I, Pop , Tastes) o Price of substitutes (butter margarine) o Complements (popcorncola) o Income of consumersnormal good (dQddI>o) vs inferior good (income rises, demand for cheap goods shift left) o Population (dQd dPop >0) o Tastes September 23, 2009lecture 04 Supply curve: positive slope
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