• 2022-05-29
    回归模型中,[img=268x23]180345a62f20ba7.png[/img]。观察下图,用[img=17x17]180345a637ee0c8.png[/img]表示因子A,用[img=17x17]180345a63fd93a4.png[/img]表示因子B,则[img=94x23]180345a648544d1.png[/img]的估计分别是多少?[img=328x238]180345a65331961.png[/img]
    A: 30.5 ,-0.5,-4.5,-14.5
    B: 30.5,0.5,4.5,-14.5
    C: 30.5,0.5,-4.5,-14.5
    D: 30.5,0.5,-4.5,14.5
  • 举一反三