《方差分析单因素》PPT课件

孟 辰 10210730019吴 琼 10210730024朱冰洁 10210730027 Outline 1原理回顾抽样分布律 2 T test 3 One-way ANOVA 4 Two-way ANOVA 14-Hispanic; 50-white) Y=income X=number of years of education Z=ethnic group (z1=1, b; z2=1, H; Otherwise,w) 2211)(E ZBZBBXaY 协方差分析模型112211 .)(E gg ZBZBZBBXaY Source DF Sum of squares Mean Square F value PrFModel 3 3 8 9 9 .4 2 5 5 1 2 9 9 .8 0 8 5 2 1 .7 5 0 .0 0 0 1Error 7 6 4 5 4 1 .0 6 2 0 5 9 .7 5Total 7 9 8 4 4 0 .4 8 7 5R-Square 0 .4 6 2 0 Root MSE 7 .7 2 9 9Parameter Estimate T for H0 : parameter=0 Pr|T| Std Error of EstimateIntercept -7 .8 3 1 7 -1 .8 6 0 .0 6 6 5 4 .2 0 6 1 EDUC 2 .2 1 5 8 7 .1 6 0 .0 0 0 1 0 .3 0 9 6Race b -5 .4 3 7 2 -2 .4 3 0 .0 1 7 4 2 .2 3 6 5h -2 .4 6 6 9 -1 .0 4 0 .3 0 3 6 2 .3 8 1 6w 0 Dependent variable: Income 21 5.24.52.28.7 ZZXY Category Y-Intercept Slope Mean at Fixed X,E(Y) Difference from Mean of Category 3 , Controlling X1 a+B1 B (a+B1 )+BX B12 a+B2 B (a+B1 )+BX B23 a B a+BX 0 有交互作用)(6.0)(2.16.47.96.29.12 2121 XZXZZZXY Source DF Sum of squares Mean Square F valueModel 5 4 0 7 2 .3 8 5 8 1 4 .4 7 7 1 3 .8 0Error 7 4 4 3 6 8 .1 0 3 5 9 .0 2 8Total 7 9 8 4 4 0 .4 8 8 parameter Estimate T for H0 : Parameter=0 Pr|T| Std Error of Estimateintercept -1 2 .9 3 -2 .4 6 0 .0 1 6EDUC 2 .6 6 .6 5 0 .0 0 0 1RACE b 9 .6 7 1 .0 6 0 .2 9 4 0h 4 .6 3 0 .3 8 0 .7 0 3 9w 0EDUC*RACE b -1 .2 1 -1 .7 0 0 .0 9 3 3h -0 .5 6 -0 .5 6 0 .5 7 8 1 w 0 XY 4.13.3 XY 23.8 BlackHispanic the endthank you