Stata命令为: anova x a b a*b 结果为: Number of obs = 16 R-squared = Root MSE = .181968 Adj R-squared = Source | Partial SS df MS F Prob > F -----------+---------------------------------------------------- Model | 3 | a | 1 b | 1 a*b | .336400032 1 .336400032 | Residual | .397350008 12 .033112501 -----------+---------------------------------------------------- Total | 15 .338544999 计算残差 predict e,residual 对残差进行正态性检验() swilk e Shapiro-Wilk W test for normal data Variable |