题库搜索>问题求解PS-13188
Yesterday each of the 35 members of a certain task force spent some time working on project P. The graph shows the number of hours and the number of members who spent that number of hours working on project P yesterday. What was the median number of hours that the members of the task force spent working on project P yesterday?
分析A选项
分析B选项
分析C选项
分析D选项
分析E选项
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一共有35人，就是有35种工作小时，要求工作小时的中位数，你就是第18种工作小时，工作小时是1-5的有17人，那么第18人就是6小时
802450ou
服了，你这个E选项我选不到啊。。屏幕拉不下去
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2021-09-26 15:22:06
802450ou回复802450ou
奇数个样本，中位数在 （35+1）/2=18的位置
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2021-09-26 16:28:20
berry700
做的时候选项没有6啊
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2021-09-20 17:08:54
308381xsis
什么啊，不明白
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2021-02-25 10:56:29
11
We have set consisting of 35 terms (terms=number of members): 9+4+1+2+1+8+10=35. Median of a set, with odd number of terms, would be the middle term, so 18th term. Values of terms: 9 terms=1, 4 terms=2, 1 term=3, 2 terms=4 , 1 term=5, 8 terms=6 and 10 terms=7 --> 18th term is 6. To illustrate: 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 3, 4, 4, 5, 6, 6, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7. Answer: E.
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2017-11-22 03:36:19
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问题求解PS
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题目信息1m48s
平均耗时
75.5%
平均正确率
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24+35+35+6课时 
