A.統(tǒng)計調(diào)查B.統(tǒng)計整理C.統(tǒng)計設計D.統(tǒng)計分析
A.10%B.90%C.9%D.30%
A.y=38+144tB.y=110+36tC.y=72+110tD.y=34+36t