【正文】
食品消費需求函數(shù): Q:人均食品消費支出; X:城鎮(zhèn)居民人均消費支出; P0:城鎮(zhèn)居民消費支出價格縮減指數(shù); P1:城鎮(zhèn)居民食品消費支出價格縮減指數(shù); 31210Q A X P P ????1 2 3 0? ? ?? ? ?約束條件: 0 1 2 1 3 0l n l n l n l nQ X P P? ? ? ? ?? ? ? ? ?(*) 10 1 200l n l n l nXPQPP? ? ? ?? ? ? ?(**) 對 無約束 的食品消費需求模型的估計結果 (1981~1994): Dependent Variable: LOG(Q) Method: Least Squares Sample: 1981 1994 Included observations: 14 Variable Coefficient Std. Error tStatistic Prob. C LOG(X) LOG(P1) LOG(P0) Rsquared Mean dependent var Adjusted Rsquared . dependent var . of regression Akaike info criterion Sum squared resid Schwarz criterion Log likelihood HannanQuinn criter. Fstatistic DurbinWatson stat Prob(Fstatistic) β1+β2+β3= 對 受約束 的食品消費需求模型的估計結果 (1981~1994): Dependent Variable: LOG(Q) Method: Least Squares Sample: 1981 1994 Included observations: 14 Variable Coefficient Std. Error tStatistic Prob. C LOG(X/P0) LOG(P1/P0) Rsquared Mean dependent var Adjusted Rsquared . dependent var . of regression Akaike info criterion Sum squared resid Schwarz criterion Log likelihood HannanQuinn criter. Fstatistic DurbinWatson stat Prob(Fstatistic) 對無約束和受約束的食品消費需求模型的估計結果(1981~