题目内容
(多选)对于分组数据的组中值的计算方法有( )。
2021-12-30
A.闭口组组中值=(上限+下限)/2
B.开口组末组组中值=下限+上限/2
C.开口组首组组中值=上限-下限/2
D.开口组首组组中值=上限-邻组组距/2
E.开口组末组组中值=:下限+邻组组距/2
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