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Pollak, R.A. and Wales, T.J. (1969) Estimation of the Linear Expenditure System. Econometrica, 37, 611-628.

has been cited by the following article:

  • TITLE: Testing the Adding up Condition in Demand Systems

    AUTHORS: Quirino Paris, Francesco Caracciolo

    KEYWORDS: Adding up, Demand Systems, Quantity Format, Share Format

    JOURNAL NAME: Open Journal of Statistics, Vol.7 No.2, April 26, 2017

    ABSTRACT: A test of the adding up condition in demand systems is crucial for determining whether a share format is admissible when the number of sample goods is smaller than the number of commodity choices available to consumers. This test requires the estimation of a demand system in a quantity format. It cannot be performed when a demand system is specified in share format. The share specification of any demand system is like a straight jacket: once worn, it forces the error covariance matrix to be singular and the adding up condition to hold whether or not the data generating process warrants it. The empirical verification of the adding up hypothesis uses a five-commodity sample selected from the Canadian Family Expenditure Survey with 4847 observations. Three specifications are considered: AIDS (Almost Ideal Demand System), QUAIDS (Quadratic AIDS) and EASI (Exact Affine Stone Index). The hypothesis is rejected in all three cases with a high level of confidence.