问题
多项选择题
变异指标是用来测定各变量值之间差异程度的统计指标，主要包括（）。
A.半距
B.全距
C.平均差
D.方差
E.标准差
答案
参考答案：B, C, D, E
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变异指标是用来测定各变量值之间差异程度的统计指标，主要包括（）。
A.半距
B.全距
C.平均差
D.方差
E.标准差
参考答案：B, C, D, E
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