A.2m;3m;6m B.2m;4m;8m C.3m;3m;6m D.3m;4m;8m
A.50% B.70% C.90% D.100%
A.2;2;2;中間值 B.2;2;3;平均值 C.3;3;2;中間值 D.3;3;3;平均值