交互作用的协方差分析.sas

sas的多元统计应用上、 有关sas的应用

data ex; do a=1 to 4; do b=1 to 2;
do i=1 to 2;input x y @@;output;end;end;end;
cards;
14.6  97.8   12.1 94.2	19.5 113.2  18.8 110.1
13.6 100.3  12.9 98.5	18.5 119.4  18.2 114.7
12.8 99.2   10.7 89.6	18.2 122.2  16.9 105.3
12.0 102.1  12.4 103.8	16.4 117.2  17.2 117.9
proc glm; class a b;model y=x a b a*b/solution;
lsmeans a b/stderr pdiff;run;