甲、乙、丙三个芭蕾舞团各有10名女演员，她们的平均身高都是165cm，其方差分别为S甲2=1.5，S乙2=2.5，S丙2=0.8，则_1团女演员身高更整齐（填甲、乙、丙中一个）．_刷题宝

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甲、乙、丙三个芭蕾舞团各有10名女演员，她们的平均身高都是165cm，其方差分别为S_甲²=1.5，S_乙²=2.5，S_丙²=0.8，则____团女演员身高更整齐（填甲、乙、丙中一个）．

上一题下一题 0.0难度选择题更新时间:2017-10-04 06:19:54

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丙

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