已知样本:12,7,11,12,11,12,10, 10,9,8,13,12,1
问题:
已知样本:12,7,11,12,11,12,10, 10,9,8,13,12,10,9,6,11,8,9,8,10,那么频率为0.25的样本的范围是( )
A.[5.5,7.5)
B.[7.5,9.5)
C.[9.5,11.5)
D.[11.5,13.5)
已知样本:12,7,11,12,11,12,10, 10,9,8,13,12,10,9,6,11,8,9,8,10,那么频率为0.25的样本的范围是( )
A.[5.5,7.5)
B.[7.5,9.5)
C.[9.5,11.5)
D.[11.5,13.5)