The Use of Wealth to Compare Households' Average Saving
利用财富比较家庭平均储蓄
To identify the determinants of saving, cross-sectional studies of households usually collect and compare the current values of variables. A frequent difficulty is correlation of the known variables with unknown characteristics of households. Stratification of the sample may not always eliminate such correlation, making for biased estimates. A method of avoiding the bias is to sum the regression equation over the working life of the head of each household, which eliminates…