我来回答这个问题 (其实我也是今天遇到这个问题,上网找办法,看到这个帖子,结果前面也没人解答,我再认真看书,查资料,终于解决了这个问题)
其实比较各组斜率,在SPSS中不在regression中,而在GLM中
Analyze->General Linear Model->Univariate
我用Biometry (Sokal and Rohlf, 1995)这本书上的例子做的,结果用SPSS算出来的结果,跟书上手动计算给出的结果完全一样。
Tests of Between-Subjects Effects
Dependent Variable:y
Source Type I Sum of Squares df Mean Square F Sig.
Corrected Model 5966.386a 7 852.341 234.097 .000
Intercept 5803.372 1 5803.372 1.594E3 .000
group 390.654 3 130.218 35.765 .000
x 5574.935 1 5574.935 1.531E3 .000
group * x .796 3 .265 .073 .973
Error 47.333 13 3.641
Total 11817.090 21
Corrected Total 6013.718 20
a. R Squared = .992 (Adjusted R Squared = .988)