Engel's law

Japanese: エンゲル法則 - エンゲルほうそく（英語表記）Engel’s law

This is an empirical law that is stably observed between the proportion of food expenses in a household's consumption expenditure and income level. It is named after the discoverer of this law, CLE Engel. It is also called "Engel's Law." In his 1857 paper "Production and Consumption in the Kingdom of Saxony," Engel discovered a stable law in the relationship between household income level and food expenses based on data from household surveys conducted by E. Dupechaud and Le Play. In other words, it is an empirical law that "the higher the household income, the lower the proportion of food expenses in total consumption expenditure."

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

家計の消費支出に占める食費の割合と所得水準との間で安定的に観測される経験法則をいう。その法則の発見者C.L.E.エンゲルの名にちなんでこう呼ばれる。〈エンゲルの法則〉ともいう。エンゲルは，1857年に著した論文〈ザクセン王国における生産および消費事情〉の中で，E.デューペショーやル･プレーらの行った家計調査資料をもとに，世帯の所得水準と食費の関係に一つの安定的法則性のあることを発見した。すなわち，〈世帯所得が高くなればなるほど，総消費支出に占める食費の支出割合が低下する〉という経験法則である。

出典　株式会社平凡社世界大百科事典第２版について　情報

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