Engel's law states that as the income of a household rises
- A.The proportion of income spent on food falls
- B.The proportion of income spent on food rises
- C.Total spending on food falls in absolute terms
- D.Saving falls as a proportion of income
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Explanation
The correct answer is A. Engel's law, named after the nineteenth century statistician Ernst Engel, says that the share of a household's spending that goes on food falls as its income rises, even though the amount spent on food may well go up. It is one of the most firmly established regularities in applied economics and is used to compare the standard of living of households, regions and countries, since a high share of food in spending is a sign of poverty. Option B is wrong because it states the law in reverse. Option C is wrong because the law concerns the proportion, not the absolute amount, which usually rises and shifts towards better quality food. Option D is wrong because saving generally rises as a proportion of income, which is a separate proposition about the consumption function.