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Kreu XV

Kreu XV. Konsumi dhe investimet. Konsumi dhe kursimi . Te ardhurat e disponueshme dhe funksioni I konsumit. YD=C+S Ne vendet e zhviluara konsumi perfshine mbi 65% te GDP Kursimi konsiderohet edhe si e mire luksi ne shkalle superiore

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Kreu XV

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  1. Kreu XV Konsumi dhe investimet

  2. Konsumi dhe kursimi. Te ardhurat e disponueshme dhe funksioni I konsumit • YD=C+S • Ne vendet e zhviluarakonsumiperfshinembi 65% te GDP • Kursimikonsiderohetedhesi e mire luksi ne shkallesuperiore • Pjerresia e kurbes se konsumit: “ prirjamarxhinale per konsum” ( Marginal Propensity for Consumption, MPS) • Pjerresia e kurbes se kursimit:” prirjamargjinale per kursim” (Marginal Propensity for Saving- MPS) • Pjerresia C+S=YD , nenkuptohet se MC+MS=MYD( marginal yield disposable) • Prirjamesatare per konsum ( Average Propensity for Consumption APC) • Prirjamesatare per kursim (Average Propensity for Saving APS)

  3. C=a+bYD, nga tabela kemi C=10+0.8YD • S=YD-C • S=YD-a-bYD • S=-a+(1-b)YD • S=-10+(1-0.8)YD

  4. Kurba e konsumit dhe kurba e kursimit 45° C,S Milion leke C S 210 MPC= 4/5 170 130 90 B MPC= 1/5 A 50 0 50 100 150 200 250 Te ardhurat e disponueshme

  5. Funksione jolineare te konsumit dhe te kursimit 45° Kursimi C, S C konsumi S kursimi 0 YD

  6. Prirja mesatare per konsum C, S D B A APC=BM/0M 0 M YD

  7. Konsumi, te ardhurat prezente dhe te ardhurat e ardhshme Konsumi i ardhshem M Yt+1+[1/(1+i)]Yt Vija e konsumit individual A Yt+1 N Yt+[1/(1+i)]Yt+1 Yt Konsumi prezent

  8. Konsumi dhe ndryshimi i pasurise Konsumi i ardhshem M’ M V I’ W Yt+1 I A N N Ct Yt Konsumi prezent

  9. Konsumi permanent, teardhuratpermanente dhe teardhurattranzitore • Cp =kYp, ku k=MPC=APC • Te ardhurattranzitore, difernec ne mesteatyrepermanente dhe aktuale • Y=Yp+Yt • Per periudhaafategjate Y=Yp • Njejteeshteedhe per konsumin • C=Cp+Ct, ose per periudheafategjate C=Cp • Funksioni I konsumit, sipastezes se teardhuravepermanenteeshte: Cp=kYp, ose C=kYp

  10. Konsumi dhe te ardhurat permanente Konsumi C=kYp Y= Yp + Yt Y = Yp C= Cp = Ct k=APC=MPC C = Cp Cp = kYp ose Cp=kYp Te ardhurat permanente

  11. Investimet dhe faktoretpercaktuestetyre • Invetimet dhe norma e interesit • Teoria e akseleratorit • It=v(Yt-Yt-1 ) It=investimetneto ne periudhenkorrente Yt=teardhruatkombetare ne periudhenkorrente Yt-1=teardhuratkombetare ne periudhen e meparshme V= njekonstanteqenjihetsiakselerator. GI=v(Yt-Yt-1 )+Rt;

  12. Funksioni i investimeve Norma e ineresit 10% 5% I=f(i) 23 38 Investime (milionë lekë)

  13. Teoria e akseleratorit It = v (Yt – Yt-1) GI = v (Yt – Yt-1) + Rt

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