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【OG20-P170-158题】
For the positive numbers, n, n+1, n+2, n+ 4, and n+ 8, the mean is how much greater than the median?
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中位数为n+2,平均数为(5n+15)/5=n+3,所以,平均数比中位数大1
题目讨论 (1条评论)

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499685skw
不是连续的数字
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0 回复 2022-09-09 15:28:17