411 REFERENCE · Wiktionary
Engel's law
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
Etymology
Proposed by the statistician Ernst Engel in 1857.
Proper noun
en economics The relationship whereby, as family income increases, the percentage spent on food decreases, even though the total amount of food expenditure increases.
en eponyms