caa a22 4500 467896186 CHVBK 20180406152804.0 cr unu---uuuuu 170328e20060901xx s 000 0 eng 10.1007/s00181-005-0044-3 doi (NATIONALLICENCE)springer-10.1007/s00181-005-0044-3 Matsuda Toshinobu School of Agricultural Science, Tottori University, Koyama, 680-8553, Tottori, Japan aut Linear approximations to the quadratic almost ideal demand system [Elektronische Daten] [Toshinobu Matsuda] This paper investigates linear approximations to the recently popular quadratic almost ideal demand system (QUAIDS) by proposing a new composite variable and conducting a simulation study. The linear approximations are especially useful when one uses nonstationary time series, to which nonlinear systems are difficult to apply properly. The new composite variable performs well in combination with the price indices appropriate for linearizing the almost ideal demand system. The QUAIDS can be linearly approximated on a practical basis if the appropriate combinations of composite variables and elasticity formulas are employed and the base point is set to the point of evaluation. Springer-Verlag, 2006 Composite variable nationallicence Linear approximation nationallicence Monte Carlo experiment nationallicence Quadratic almost ideal demand system nationallicence Empirical Economics Physica-Verlag 31/3(2006-09-01), 663-675 0377-7332 31:3<663 2006 31 181 https://doi.org/10.1007/s00181-005-0044-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00181-005-0044-3 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Matsuda Toshinobu School of Agricultural Science, Tottori University, Koyama, 680-8553, Tottori, Japan aut NATIONALLICENCE 773 0- Empirical Economics Physica-Verlag 31/3(2006-09-01), 663-675 0377-7332 31:3<663 2006 31 181 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer