未知题型
四分位差和标准差的计量单位是（ ）。
- A.与总体单位本身的计量单位相同
B．通常以百分数作为计量单位
C．与各单位标志值的计量单位相同
D．不存在计量单位
E．与总体平均数的计量单位相同
【参考答案】
C,E
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