A .520
B .510
C .500
D .540
[单选题]某连续变量数列,其末组为开口组,下限为200,又知其相邻组的组中值为170,则末组的组中值为()。A . 190B . 215C . 230D . 285
[单选题]某连续变量数列,其末组为500以上,其邻近组的组中值为480,则末组的组中值为()。A . 520B . 510C . 530D . 540
[单选题]某连续变量数列,其末组为开口组,下限为200,又知其邻组的组中值为170,则末组组中值为( )。A.260B.215C.230D.285
[单选题]某连续变量数列,其末组为开口组,下限为200,又知其邻组的组中值为170,则末组组中值为( )。A.260B.215C.230D.285
[单选题]某连续变量数列,其末组为开口组,下限为200,又知其邻组的组中值为170,则末组组中值为()。A .260B .215C .230D . D.285
[单选题]某连续变量数列,其末组为开口组,下限为200,又知其邻组的组中值为170,则末组组中值为( )。A.260B.215C.230D.185
[单选题]连续变量的数列中,其末组为开口组,下限是1100,相邻组的组中值为1050,则末组的组中值为( )。A.1050B.1100C.950D.1150
[主观题]某连续变量数列,其末组为500以上,又知其邻组的组中值为480,则末组的组中值是()A.520B.510C.530D.540
[单选题]某等距连续变量数列,其末组为开口组,下限为900,又知其邻组的组中值为860,则末组组中值为()。A . 840B . 860C . 940D . 960
[单选题]某等距连续变量数列,其末组为开口组,下限为200,又知其邻组的组中值为170,则末组组中值为( )。A.260B.215C.230D.285