42一元加权最小二乘估计 序号储蓄y居民收入xx等级残差e l等级 264 8777 169.0 169.0 -15 225 105 2 26.6 26.6 9954 -104.6 104.6 10508 l105 l10.5 10979 1594 1594 15 -10 107 11912 6 253.4 253.4 -17 289 406 12747 2 13499 8.2 8.2 49 431 14269 129.0 129.0 15522 -78.0 780 898 16730 1297 129.7 950 17663 1027 102.7 6 36 -145.5 145.5 14 14 819 19635 -195.3 195.3 15 21163 15 784 2300 38200 31 -286.1 286.1 24 494.2 一元加权最小二乘估计 序号 储蓄y 居民收入x xi等级 残差ei |ei | |ei |等级 di 1 264 8777 1 169.0 169.0 16 -15 225 2 105 9210 2 -26.6 26.6 3 -1 1 3 90 9954 3 -104.6 104.6 7 -4 16 4 131 10508 4 -110.5 110.5 8 -4 16 5 122 10979 5 -159.4 159.4 15 -10 100 6 107 11912 6 -253.4 253.4 23 -17 289 7 406 12747 7 -25.1 25.1 2 5 25 8 503 13499 8 8.2 8.2 1 7 49 9 431 14269 9 -129.0 129.0 9 0 0 10 588 15522 10 -78.0 78.0 4 6 36 11 898 16730 11 129.7 129.7 10 1 1 12 950 17663 12 102.7 102.7 6 6 36 13 779 18575 13 -145.5 145.5 14 -1 1 14 819 19635 14 -195.3 195.3 19 -5 25 15 1222 21163 15 78.4 78.4 5 10 100 … … … … … … … … … 31 2300 38200 31 -286.1 286.1 24 7 49 2 i d