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ralph lauren polo

Thanasis Stengos and Dianqin Wang
''Testing for Shape Invariance of Semiparametric Equivalence Scales''
( 2007, Vol. 4 No.21 )
Within a semiparametric framework we propose a test of shape invariance of Engel curves, which is a necessary condition for base independence. Using Canadian family expenditure data for 1996 we reject shape invariance for the fuel and clothing share equations.
JEL: D1 - Household Behavior: General
Manuscript Received : Mar 12 2007 Manuscript Accepted : Jun 12 2007

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