选择题(中位数)
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把五个数从小到大排列,其平均数是38,前三个数的平均数是27,后三个数的平均数是48,这组数据的中位数是( ) A.34 B.35 C.36
![选择题(中位数)](/uploads/image/z/8047569-57-9.jpg?t=%E9%80%89%E6%8B%A9%E9%A2%98%28%E4%B8%AD%E4%BD%8D%E6%95%B0%29)
解题思路: 直接利用前三个数的和与后三个数的和中均有中位数;二者相加再减去总和等于中位数.
解题过程:
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最终答案:略
解题过程:
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最终答案:略