※ 引述《jeff77766 (王天霸)》之铭言:
: 想请问一题在 最新GRE数学预测模拟试题(一)的题目
: 25. the company at which Mark is employed has 80 employees each of whom has a
: different salary. Mark's salary of $43,700 is the second-highest salary in the
: first quartile of the 80 salaries.
Mark 是最低四分之一里的第二高 -> 排名= (80/4)-1 = 19
: If the company were to hire 8 new employees
: at salaries that are less than the lowest of the 80 salaries,
加了8个22k, Mark 排名 = 19+8 = 27
: what would
: Mark's salary be with respect to the quartiles of the 88 salaries at the
: company, assuming no other changes in the salaries?
88 个人,每个quartile = 22人
27名 = 1 quartile + 5 人 -> (E)
: A The 4th-highest salary in the first quartile
: B The highest salary in the 1st quartile
: C The 2nd-lowest salary in the 2nd quartile
: D The 3rd-lowest salary in the 2nd quartile
: E The 5th-lowest salary in the 2nd quartile
: 答案是E
: 如果插入的薪水是最低的八笔
: 不是应该不会影响到前面的四分位数吗?
因为总人数改变了
: 可是这样看来就发现根本没答案可选
: 好奇怪阿
: 请大家帮我解惑
: 谢谢大家!!