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标题: 求一道数学题。一直没懂意思。大神指点呀 [打印本页]

作者: echoetmoi 时间: 2013-6-5 06:28 标题: 求一道数学题。一直没懂意思。大神指点呀

What is the median number of employees assigned per project for the projects at Company Z?
(1)       25 percent of the projects at Company Z have 4 or more employees assigned to each project.
(2)       35 percent of the projects at Company Z have 2 or fewer employees assigned to each project.

A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient.
Answer: c
完全不懂怎么做，感觉应该是我理解题意。。中位数怎么可以从中求出呢？

作者: sophieMOON 时间: 2013-6-5 21:01

从（1）来看，有25%的projects每个project有4个或者4个以上的人参与
从（2）来看，有35%的projects，每个project有2个或2个以下的人参与
那么剩余的40%的projects，唯一的可能性就是每个project只有3个人参与
所以中位数就是3。

作者: echoetmoi 时间: 2013-6-6 06:08

thanks !@

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