A.不變標志B.直接標志C.品質(zhì)標志D.間接標志
A.定序數(shù)據(jù)B.定類數(shù)據(jù)C.定距數(shù)據(jù)D.定比數(shù)據(jù)
A.高斯B.費希爾C.戈塞特D.卡爾·皮爾遜