问题
选择题
已知一个样本:23,24,25,26,26,27,27,27,27,27,28,28,28,29,29,30,30,31,31,32,那么频数为8的范围是[ ]
A.24.5~26.5
B.26.5~28.5
C.28.5~30.5
D.30.5~32.5
答案
答案:B
已知一个样本:23,24,25,26,26,27,27,27,27,27,28,28,28,29,29,30,30,31,31,32,那么频数为8的范围是[ ]
A.24.5~26.5
B.26.5~28.5
C.28.5~30.5
D.30.5~32.5
答案:B