【单选题】data<-data.frame( A=gl(3,20,60), B=gl(4,5,60), Y=c(23, 25, 21, 14, 15, 20, 17, 11, 26, 21, 16, 19, 13, 16, 24, 20, 21, 18, 27, 24, 28, 30, 39, 17, 22, 26, 24, 21, 25, 26, 19, 18, 19, 20, 2...
B.
Df Sum Sq Mean Sq F value Pr(>F) A 2 504.4 252.22 10.982 0.000118 *** B 3 93.7 31.22 1.359 0.266421 A:B 6 115.4 19.24 0.838 0.547040 Residuals 48 1102.4 22.97
C.
Df Sum Sq Mean Sq F value Pr(>F) A 2 352.5 176.27 8.959 0.000494 *** B 3 87.5 29.17 1.483 0.231077 A:B 6 71.7 11.96 0.608 0.722890 Residuals 48 944.4 19.68