A.市場(chǎng)需求預(yù)測(cè)B.市場(chǎng)供給預(yù)測(cè)C.市場(chǎng)行情預(yù)測(cè)D.競(jìng)爭(zhēng)格局預(yù)測(cè)
A.匿名性B.反饋性C.經(jīng)濟(jì)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)