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【OG20-P282-338题】
The 10 students in a history class recently took an examination. What was the maximum score on the examination?(1)The mean of the scores was 75 .(2)The standard deviation of the scores was 5.
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条件1:平均分75,最高分无法求,不充分
条件2:标准差是5,最高分无法求,不充分
结合:最高分无法求,不充分
题目讨论 (1条评论)

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Jeaninla
知道平均数和标准差方差还需要知道一共有几个数,才能够求出最大值。
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0 回复 2021-02-16 19:08:28
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268265zgqp回复Jeaninla
即便知道几个数 也求不出吧
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0 回复 2021-06-21 10:56:52
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