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AP Economics Rapid Review Flashcards

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169156382Economicsthe study of how people. firms, and societies use their scarce productive resources to best satisfy their unlimited material wants0
169156383Resourcescalled factors of production, these are commonly grouped into the four categories of land, labor, capital, and entrepreneurship1
169156384Scarcitythe imbalance between limited productive resources and unlimited human wants.Because economic resources are scarce, the goods and services a society can produce are also scarce2
169156385Trade-offsscarce resources imply that individuals, firms, and governments are constantly faced with difficult choices that involve benefits and costs3
169156386Opportunity costthe value of the sacrifice made to pursue a course of action4
169156387Marginalthe next unit or increment of an action5
169156388Marginal benefit (MB)the additional benefit received from the consumption of the unit of a good or service6
169156389Marginal Cost (MC)the additional cost incurred from the consumption of the next unit of a good or service7
169156390Marginal analysismaking decisions based upon weighing the marginal benefits and costs of that action. The rational decision maker chooses an action if MB is greater than or equal to MC8
169156391Production possibilitiesdifferent quantities of goods that an economy can produce with a given amount of scarce resources. Graphically, the trade-off between the production of two goods is portrayed as a PPC9
169156392Law of increasing coststhe more of a good that is produced, the greater the opportunity cost of producing the next unit of that good10
169156393Absolute advantageexists if a producer can produce more of a good than all other producers11
169156394Comparative advantagea producer has this if he can produce a good at a lower opportunity cost than all other producers12
169156395Specializationwhen firms focus on production of goods for which they have comparative advantage13
169156396Productive efficiencyproduction of maximum outout for a given level of technology and resources. All the points on the PPC are productively efficient14
169156397Allocative efficiencyproduction of the combination of goods and services that provides the most net benefit to society. The optimal quantity of a good is achieved when the MB=MC of the next unit. This only occurs at one point on the PPC15
169156398Economic growthoccurs when an economy's production possibilities increase. This can be a result of more resources, better resources, or new technology16
169156399Market Economy (Capitalism)an economic system based upon the fundamentals of private property, freedom, self-interest, an prices.17
169082352Law of DemandHolding all else equal, when the price of a good rises, consumers decrease their quantity demanded for that product18
169082353All else equalto predict how a change in on variable affects a second, we hold all other variables constant. This is also referred to as the "ceterus paribus" assumption.19
169082354Absolute (or money) pricesthe price of a good measured in units of currency20
169082355Relative pricesthe number of units of any other good Y that must be sacrificed to acquire the first good X. Only relative prices matter21
169082356Substitution Effectthe change in quantity demanded resulting from a change in the price of one good relative to the price of other goods.22
169082357Income effectthe change in quantity demanded that results from a change in the consumer's purchasing power (or real income)23
169082358Demand schedulea table showing quantity demanded for a good at various prices24
169082359Demand curvea graphical depiction of a demand schedule. The demand curve is downward sloping, reflecting the Law of Demand25
169082360Determinants of demandconsumer income, price of substitute good, price of complementary good, tastes and preferences, expectations, number of buyers26
169082361Normal goodsa good for which higher income increases demand27
169082362Inferior goodsa good for which higher income decreases demand28
169082363Substitute goodstwo goods are these if they provide essentially the same utility to the consumer29
169082364Complementary goodstwo goods are these if they provide more utility when consumed together than when consumed separately30
169082365Law of supplyholding all else equal, when the price of a good rises, suppliers increase their quantity supplied for that good31
169082366Supply schedulea table showing quantity supplied for a good at various prices32
169082367Supply curvea graphical depiction of the supply schedule. The supply curve is upward sloping to reflect to Law of Supply33
169082368Determinants of Supplycost of input, taxes and subsidies, technology, price of production of other goods, expectations, number of firms34
169082369Market equilibriumexists at the only price where the quantity supplied equals the quantity demanded. Or it is the only quantity where the price consumers are willing to pay is exactly the price producers are willing to accept.35
169082370Shortagealso known as excess demand, this exists at a market price when the quantity demanded exceeds the quantity supplied. The price rises to eliminate this36
169082371Disequilibriumany price where quantity demanded is not equal to quantity supplied37
169082372Surplusalso known as excess supply, this exists at a market price when the quantity supplied exceeds quantity demanded. The price falls to eliminate this38
169114123Total welfarethe sum of consumer surplus and producer surplus. The free market equilibrium provides maximum combined gain to society39
169114124Consumer surplusthe difference between you willingness to pay and the price you actually pay. It is the area below the demand curve and above the price40
169114125Producer surplusthe difference between the price received and the marginal cost of producing the good. It is the area above the supply curve and under the price41
169156400Elasticitymeasures the sensitivity or responsiveness of a choice to a change in an external factor42
169156401Price elasticity of demandmeasures the sensitivity of consumer quantity demanded for good X when the price of good X changes43
169191439Price elasticity formulaEd=(%∆Qd)(%∆P) Ignore negative sign44
169191441Price elastic demandEd>1 or the (%∆Qd)>(%∆P) consumers are price sensitive45
169191443Price inelastic demandEd<1 or the (%∆Qd)<(%∆P) consumers are not price sensitive46
169191445Unit elastic demandEd=1 meaning the (%∆Qd)=(%∆P)47
169191447Perfectly inelasticEd=0 in this special case, the demand curve is vertical and there is absolutely no response to price change48
169191449Perfectly elasticEd=∞ in this special case, the demand for curve is horizontal meaning consumers have and instantaneous and infinite response to price change49
169191451Slope and elasticitythe more vertical a good's demand curve, the more inelastic the demand for that good. The more horizontal the demand curve, the more elastic.50
169191453Determinants of elasticityif a good has more readily available substitutes it is likely that consumers are more price elastic for that good. If a high proportion of a consumer's income is devoted to a particular good, consumers are generally more price elastic for that good. When consumers have more time to adjust to a price change, their response is usually more elastic51
169191455Total revenueTR=P*Qd52
169191458Total revenue testtotal revenue rises with a price increase if demand is price inelastic and falls with a price increase if demand is elastic53
169191460Elasticity and demand curvesat the midpoint of a linear demand curve, Ed=1. Above the midpoint demand is elastic and below the midpoint it is inelastic54
169191462Income elasticitya measure of how sensitive consumption of good X is to a chance in the consumer's income55
169191464Income elasticity formulaEi=(%∆Qd good X)(%∆ Income)56
169191466Luxurya good for which the income elasticity is greater than 157
169191468Necessitya good for which the income elasticity is above zero, but less than one58
169191470Values of income elasticityIf Ei >0, the good is normal and a luxury. If 1>Ei>0 the good is normal and income inelastic (necessity). If Ei<0 the good is inferior59
169191472Cross-price elasticity of demanda measure of how sensitive consumption of good X is to a change in the price of good Y60
169191474Cross-price elasticity formulaExy=(%∆Qd)(%∆ price Y)61
169191476Values of cross-price elasticity of demandif Exy>0, goods X and Y are substitutes. If Exy<0 goods X and Y are complementary goods62
169191478Price elasticity of supplymeasures the sensitivity of quantity supplied for good X when the price of good X changes63
169191480Price elasticity of supply formulaEs=(%∆Qs)(%∆P)64
169191482Excise taxa per unit tax on production results in a vertical shift in the supply curve by the amount of the tax65
169191484Incidence of taxthe proportion of the tax paid by consumers in the form of a highest price for the taxed good is greater if demand for the good is inelastic and supply is elastic66
169191486Dead weight lossthe lost net benefit to society caused by a movement awat from the competitive market equilibrium. Policies like excise taxes create lost welfare to society67
169191488Subsidyhas the opposite effect of an excise tax, as it lowers the marginal cost of production, resulting in a downward vertical shift in the supply curve for good X.68
169191489Price floora legal minimum price below which the product cannot be sold. If a floor is installed at some level above equilibrium price, it creates a permanent surplus69
169191490Price ceilinga legal maximum price above which the product cannot be sold. If a ceiling is installed at a level below the equilibrium price,, it creates a permanent shortage70
169191491Utilityhappiness, benefit, satisfaction, or enjoyment gained from consumption71
169191492Total utilitytotal happiness received from consumption of a number of units of a good72
169191493Marginal utilitythe incremental happiness received, or lost, when the consumer increases consumption of a good by one unit73
169191494Utilsa unit of measurement often used to quantify utility a.k.a "happy points"74
169191495Law of diminishing marginal utilityin a given time period, the marginal utility from consumption of more and more of that item falls75
169191496Constrained utility maximizationfor a one-good case. Constrained by prices and income, a consumer stops consuming a good when the price paid for the next unit is equal to the marginal benefit received76
169191497Utility maximizing rulthe consumer maximizes utility when they choose amounts of goods X and Y, with their limited income, so that the marginal utility per dollar spend is equal for both goods. MUx/Px=MUy/Py77
169191498Horizontal summationthe process of adding, at each price, the individual quantities demanded to find the market demand curve for a good78

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