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【单选题】
下列有位数间距描述中不正确的是。A.
四分位数间距=P75-P25
B.
四分位数间距比极差稳定来源:考试大
C.
四分位数间距即中间50%观察值的极差
D.
可用于描述正态分布资料的变异度
E.
四分位数间距越大，表示变异度越大
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