A.市場需求預(yù)測B.市場供給預(yù)測C.市場行情預(yù)測D.競爭格局預(yù)測
A.匿名性B.反饋性C.經(jīng)濟性D.一致性
A.類別或順序量表數(shù)據(jù)B.類別或等差量表數(shù)據(jù)C.順序或等比量表數(shù)據(jù)D.等差或等比量表數(shù)據(jù)