Income Elasticity of Demand (Grade 11 NSC Matric Economics): Flashcards

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Income Elasticity of Demand
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Income elasticity of demand definition

How quantity demanded responds to income changes

Income elasticity of demand formula

% change in Qd% change in income\frac{\text{\% change in Qd}}{\text{\% change in income}}

Income elasticity value for necessities

<1< 1

Income elasticity value for luxury goods

>1> 1

Income elasticity value for inferior goods

Negative

How demand for necessities responds to income increases

Increases slower than income increases

How demand for luxury goods responds to income increases

Increases faster than income increases

How demand for inferior goods responds to income increases

Decreases (inverse relationship)

Biltong's income elasticity value

1.361.36

Candles' income elasticity for poor households

−0.20-0.20

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