• 2022-05-27
    从总体中抽取样本容量为3的样本,若样本观测值是5,3,7,以下哪个说法正确?
    A: [img=20x22]180306c4e4feca0.png[/img]的值为8/3
    B: [img=19x22]180306c4ed58578.png[/img]的值为 4
    C: [img=20x22]180306c4e4feca0.png[/img]的值为4
    D: [img=19x22]180306c4ed58578.png[/img]的值为8/3
    E: [img=20x22]180306c4e4feca0.png[/img]的值为2
    F: [img=12x19]180306c50ed0c03.png[/img]的值为 4
  • 举一反三