Econometrica: Oct 1963, Volume 31, Issue 4
Forms of Engel Functions
C. E. V. LeserThe properties of various forms of Engel functions satisfying the additivity criterion are investigated. It is suggested that a form of relationship used by H. Working, but recently neglected, offers on balance great advantages. A logical generalisation of it yields a flexible function from which a good fit may be expected for most commodity groups.
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