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The importance of demographic variables in the modeling of food demand

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Dudek H.
Metody Ilościowe w Badaniach Ekonomicznych
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2010
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vol. 11
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issue 1
60-69
EN
The general objective of this research is to assess the impact of demographic variables on food demand in Poland. The empirical analysis of this paper is based on the household data, collected by GUS (Central Statistical Office) in the years 2001-2004 (household budget data).
2
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Elasticity of consumer demand: estimation using a QuadRatic Almost Ideal Demand System

100%
Gostkowski M.
Econometrics. Ekonometria. Advances in Applied Data Analytics
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2018
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issue vol. 22 no. 1
68-78
EN
This paper analyzes consumer demand using a Quadratic Almost Ideal Demand System (QUAIDS), which is an extension of an Almost Ideal Demand System (a complete demand system). Complete demand system models can be used to find the relationships that are impossible to discover using single-equation models. Additionally, the QUAIDS model can be used to model a nonlinear Engel curve. The research was based on household microeconomic data collected by GUS (the Polish Central Statistical Office) in the period 1999-2015. The complete demand model has been extended by demographic variable. The results show that the QUAIDS model does not reduce to the AIDS model and is an adequate tool to analyze consumer demand.
3
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ANALIZA POPYTU KONSUMPCYJNEGO Z WYKORZYSTANIEM MODELU AIDS

63%
Gostkowski M.
Metody Ilościowe w Badaniach Ekonomicznych
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2015
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vol. 16
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issue 3
70-82
PL
W pracy podjęto próbę analizy popytu konsumpcyjnego z wykorzystaniem kompletnego modelu popytu AIDS. Badania zostały oparte na wynikach badań budżetów gospodarstw domowych w okresie 1999-2012. Dodatkowo kompletny model popytu został rozszerzony o zmienną demograficzną oraz o zmienną czasową. W pracy został również poruszony problem zerowych wydatków oraz problem współliniowości zmiennych. Wyniki badań wskazują, że uwzględnienie zmiennych demograficznych oraz zmiennej czasowej istotnie wpływa na oszacowania współczynników elastyczności. Dodatkowo badania wskazały na region wschodni (obejmującym województwa lubelskie, podkarpackie, podlaskie oraz świętokrzyskie) jako region charakteryzujący się najbardziej odmienną strukturą popytu w porównaniu do pozostałych regionów.
EN
The paper attempts to analyze consumer demand using a complete demand system AIDS. The complete demand system is the right tool for the analysis of consumer demand because it takes into account the phenomenon of substitutability and complementarity. The research was based on household microeconomic data collected by GUS (the Polish Central Statistical Office) in the period 1999-2012. Additionally, a complete demand model has been extended by the demographic variable and the time variable. The problem of zero expenditures and the collinearity of variables were described in the paper. The results show that taking into account the phenomena of substitutability and complementarity allows a better understanding of complex interactions occurring in the market for consumer goods and services
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