• 2022-10-27
    回归模型中,[img=268x23]18037fed3fb1252.png[/img]。观察下图,用[img=17x17]18037fed4857989.png[/img]表示因子A,用[img=17x17]18037fed4ff7047.png[/img]表示因子B,则[img=94x23]18037fed591ef56.png[/img]的估计分别是多少?[img=328x238]18037fed63f6952.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