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Problem 1004
加入4后中位数是2和4,直接取后面的?
maerhulang
| 2016-02-20 19:34:15
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1 2 4 5 加入4后中位数是2和4,直接取后面的?
admin
| 2016-02-20 19:35:22
# 1
取2 4的平均数
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