天山 3-14

alexchen13

Yesterday each of 35 么member 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 on project P yesterday. what was the median number of hours that the members of the task force spent working on project P yesterday?

A.2  B.3  C.4  D.5  E.6 (answer is E)

图表内容显示：花一个小时的人9个，花两个小时的人4个，花三个小时的人1个，花四个小时的人2个，花五个小时的人1个，花六个小时的人8个，花七个小时的人10个，总数35个人。

为什么选E呢？望NNs指点。

Youknowme

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