A.斜率B.最小平均法C.回歸直線D.截距
A.時點數(shù)列B.平均數(shù)動態(tài)數(shù)列C.時期數(shù)列D.相對數(shù)動態(tài)數(shù)列
A.二者都包含組限B.二者均不含組限C.前者含組限,后者不含D.后者含組限,前者不含