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There are five positive numbers n+2, n+1, n-2, n and n+9, which of the following
There are five positive numbers n+2, n+1, n-2, n and n+9, which of the following
游客
2025-02-27
10
管理
问题
There are five positive numbers n+2, n+1, n-2, n and n+9, which of the following could be the difference between the mean and the median?
选项
A、4
B、2
C、n-1
D、n+2
E、1
答案
E
解析
这5个数的平均值为
=n+2
求median,首先要排序,如果按照从小到大排序,得到n-2,n,n+1,n+2,
n+9,中位数为n+1,(n+2)-(n+1)=1,选择E。
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