例10-2虚拟变量的回归模型,计算结果见p214 Table 10-2 Food expenditure in relation to after-tax income and sex Observation Food expenditure After-tax income Sex 1983000 11557.00 1.000000 12345678 2987000 29387.00 1.000000 2993000 3146300 1.000000 3156000 2955400 1.000000 2706.000 2513700 1.000000 2217000 1495200 1.000000 2230000 11589.00 0000000 3757.000 3332800 0000000 3821000 3615100 0.000000 10 3291000 3544800 0000000 3429000 3298800 0.000000 12 2533000 2043700 0.000000 Notes: Food expenditure= Expenditure on food in dollars After-tax income After-tax income in dollars Sex= 1 if female, o if male 10-6 Source: Extracted from Table 10-1
10-6 例 10-2虚拟变量的回归模型，计算结果见p214 Table 10-2 Food expenditure in relation to after-tax income and sex
例102工会化程度与工作权利法,计算结果见p215 Table 10-3 Union membership in the private sector and right-to-work laws PVT RWI PVT RWL PVT RWL 312 16.9 118 302 11.2 33.1 142 99 24.7 00000000000000010 11.2 30.1 144 10000000010 10.1 28.5 12.1 11.0 26.9 14.1 9.6 25.5 143 7.5 253 112 92 00111010 6.5 148 8.1 238 140 6.2 24.4 Q 7.2 20.7 124 8.1 20.3 4.6 194 115 20.7 9.5 Notes: PVT= Percent unionized in the private sector. 07 RWL= 1 for right-to-work -law states, 0 otherwise
10-7 例10-2 工会化程度与工作权利法，计算结果见p215 Table 10-3 Union membership in the private sector and right-to-work laws
例102工会化程度与工作权利法,计算结果见p215 30 209 Mean= 19. 8% RTW Fig 10-1 Unionization in private sector(PVT)versus right-to work-law(RWL states 10-8
10-8 例10-2 工会化程度与工作权利法，计算结果见p215 Fig 10-1 Unionization in private sector (PVT) versus right-towork-law (RWL) states
10.2 ANCOVA模型:包含一个定量变量,一个 两分定性变量的回归 ANCOVA模型:协方差分析模型 analysis~ of-covariance model ANCO∨A)。该回归模型中既包含定量变量,又包含定 性变量。 见教材p217218 10-9
10-9 10.2 ANCOVA模型：包含一个定量变量，一个 两分定性变量的回归 ANCOVA模型：协方差分析模型analysis-of-covariance model （ANCOVA）。该回归模型中既包含定量变量，又包含定 性变量。 见教材p217-218
例10-1的 ANCOVA模型 Y1=1535254+00570X ( female) xuv Y1=1250098+00570X After-Tax Expenditure Fig 10-2 Food expenditure in relation to after-tax income 10-10
10-10 例 10-1的ANCOVA模型 Fig 10-2 Food expenditure in relation to after-tax income