Chap04微观经济学原理.ppt

《Chap04微观经济学原理.ppt》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、ElasticityElasticityWhatdoyouthink?Couldreducingthesupplyofillegaldrugscauseanincreaseindrug-relatedburglaries?2Chapter4:ElasticityTheEffectofExtraBorderPatrolsontheMarketforIllicitDrugsQ(1,000sofounces/day)P($/ounce)5050SD8040S’TotalExpenditure=PxQS$250=$

2、50x50S’$320=$80x403Chapter4:ElasticityPriceElasticityofDemandElasticityAmeasureoftheextenttowhichquantitydemandedandquantitysuppliedrespondtovariationsinprice,income,andotherfactors.4Chapter4:ElasticityPriceElasticityofDemandDefinedGenerallyAmeasureoftheres

3、ponsivenessofthequantitydemandedofagoodtoachangeinthepriceofthatgoodFormallyThepercentagechangeinthequantitydemandedthatresultsfroma1percentchangeinitsprice5Chapter4:ElasticityPriceElasticityofDemandMeasuringPriceElasticityofDemand6Chapter4:ElasticityAssume

4、Thepriceofporkfallsby2%andthequantitydemandedincreasesby6%ThenthepriceelasticityofdemandforporkisPriceElasticityofDemand7Chapter4:ElasticityPriceElasticityofDemandMeasuringPriceElasticityofDemandObservationsPriceelasticityofdemandwillalwaysbenegative(i.e.,a

5、ninverserelationshipbetweenpriceandquantity)Forconveniencewedropthenegativesign8Chapter4:ElasticityPriceElasticityofDemandMeasuringPriceElasticityofDemandWhenis>1:elastic<1:inelastic=1:unitelastic9Chapter4:ElasticityElasticandInelasticDemand3Priceelasticity

6、ofdemandInelasticUnitelasticElastic21010Chapter4:ElasticityPriceElasticityofDemandWhatistheelasticityofdemandforpizza?OriginallyPrice=$1/sliceQuantitydemanded=400slices/dayNewPrice=$0.97/sliceQuantitydemanded=404slices/day,then11Chapter4:ElasticityPriceElas

7、ticityofDemandWhatistheelasticityofseasonskipasses?OriginallyPrice=$400Quantitydemanded=10,000passes/yearNewPrice=$380Quantitydemanded=12,000passes/year,then12Chapter4:ElasticityPriceElasticityofDemandDeterminantsofPriceElasticityofDemandSubstitutionPossibi

8、litiesBudgetShareTime13Chapter4:ElasticityPriceElasticityEstimatesforSelectedProductsGoodorservicePriceelasticityGreenpeas2.80Restaurantmeals1.63Automobiles1.35Electricity1.20Beer1.19Movies0.87Airtrav