作业帮172·142·138·140·139·145·135·141中位数是
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172·142·138·140·139·145·135·141中位数是
172·142·138·140·139·145·135·141中位数是
172·142·138·140·139·145·135·141中位数是
一共8个数字
中位数取从小到大第四五个的平均数
（140+141）/2=140.5
110,135,138,139,142,148,172, 172,135,142,110,139,138,148这组数中的中位数是（139 ）。
139
172·142·138·140·139·145·135·141中位数是
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