2. 外语
  3. For which of the following lists of number is the median equal to the average (arithmetic mean)?

For which of the following lists of number is the median equal to the average (arithmetic mean)?

admin2009-05-19  41
问题 For which of the following lists of number is the median equal to the average (arithmetic mean)?
选项 A、3,4,7
B、1,10,19
C、7,7,10,12
D、0,1,1,5
E、0,2,3,4
答案B
解析 下面哪一列数的中数(median)等于其(算术)平均值?
解：本题的正确答案为(B)。五个选项中只有(B)的中数是10，平均数也是10。
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