A.原始數(shù)據(jù) B.時(shí)間序列數(shù)據(jù) C.截面數(shù)據(jù) D.面板數(shù)據(jù)
A.橫截面數(shù)據(jù) B.時(shí)間序列數(shù)據(jù) C.面板數(shù)據(jù) D.原始數(shù)據(jù)