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‘De inkomenselasticiteit van de
gevraagde hoeveelheid’ (EY) geeft de
mate aan waarin de gevraagde
hoeveelheid verandert door een
verandering van het inkomen
%ΔQ
EY = -------
%ΔY
INKOMENSELASTICITEIT
%ΔQ %ΔQ
EY = ------- Ev = -------
%ΔY %ΔP
PRIJSELASTICITEIT
3 SOORTEN GOEDEREN:
• Noodzakelijke goederen
• Luxegoederen
• Inferieure goederen
Hoe hoog je inkomen moet zijn voordat
je een bepaald luxegoed wilt kopen
Voorbeeld
De vraag naar een product kan beschreven
worden als Qv = 2Y - 3.000. Hoe hoog is het
drempelinkomen?
Voorbeeld
De vraag naar een product kan beschreven
worden als Qv = 2Y - 3.000. Hoe hoog is het
drempelinkomen?
0 = 2Y - 3.000
-2Y = -3.000
Y = 1.500
Welke goederen horen bij:
• EY < 0
• 0 < EY < 1
• EY > 1
Welke goederen horen bij:
• EY < 0
• 0 < EY < 1
• EY > 1
%ΔQ
EY = -------
%ΔY
Welke goederen horen bij:
• EY < 0 inferieure goederen
• 0 < EY < 1 noodzakelijke goederen
• EY > 1 luxegoederen
3 SOORTEN GOEDEREN:
• Noodzakelijke goederen 0 < EY < 1
• Luxegoederen EY > 1
• Inferieure goederen EY < 0
- +
0 1
Noodzakelijke
goederen LuxegoederenInferieure
goederen

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Inkomenselasticiteit

Editor's Notes

  1. Zie voor voorbeelden de volgende slides
  2. Voedsel is een noodzakelijk goed: je hebt het nodig, dus je zult het altijd kopen, ook al is je inkomen laag. Als je inkomen ineens verdubbelt, zul je echter niet ineens twee keer zoveel voedsel gaan kopen. Noodzakelijke goederen hebben daarom een inkomenselasticiteit tussen de 0 en de 1 (zie slides verderop)
  3. Inferieure (=minderwaardige) goederen zijn goederen waar je minder van zult kopen als je inkomen toeneemt. Die producten vervang je door andere producten, die je eigenlijk liever wilde kopen, maar die je niet kon of wilde kopen met je oude inkomen. In het voorbeeld in deze slide is het Euroshopper ijs het inferieure goed. Inferieure goederen hebben een negatieve inkomenselasticiteit.
  4. Luxegoederen zijn producten die je pas koopt als je een bepaald inkomen (drempelinkomen) hebt. De vraag naar deze producten neemt vervolgens sterker toe dan de toename in inkomen. Luxegoederen hebben daarom een inkomenselasticiteit van 1 of hoger.
  5. Bijvoorbeeld: Qv= 2Y – 3000. Als we de vraag gelijk stellen aan 0, komen we op: 0 = 2Y – 3000. Y = 1500. Het drempelinkomen is in dit voorbeeld dus 1500.
  6. Bijvoorbeeld: Qv= 2Y – 3000. Als we de vraag gelijk stellen aan 0, komen we op: 0 = 2Y – 3000. Y = 1500. Het drempelinkomen is in dit voorbeeld dus 1500.
  7. Zie ook eerdere slides
  8. Zie ook eerdere slides