选课中心
7099人选课
GRE公开讲座
0元
GMAT公开讲座
0元
一对一体验课
99元
GRE模考网站
10000人
托福备考练习HOT
39209人预约
GRE辅导课程
17537 人
GMAT辅导课程
17537 人
托福辅导课程
17537 人
【定制】1v1
私人订制
资料下载
考前冲刺
扫码关注掌握一手留学资讯
回复XDF免费领
水平测试和备考资料
扫码关注公众号
新东方在线为大家整理了GRE数学经典例题讲解:身高范围的相关内容,供考生们参考,以下是详细内容。
The range of the heights of the female students in a certain class is 13.2 inches, and the range of the heights of the male students in the class is 15.4inches.
Which of the following statements individually provide(s) sufficient additional information to determine the range of the heights of all the students in the class?
Indicate all such statements.
A The tallest male student in the class is 5.8 inches taller than the tallest female student in the class.
B The median height of the male students in the class is 1.1 inches greater than the median height of the female students in the class.
C The average (arithmetic mean) height of the male students in the class is 4.6 inches greater than the average height of the female students in the class.
分析:在数轴上我们可以画出一段表示女生身高范围,另一段表示男生身高范围,
A选项告诉我们的是男生最高的比女的最高的高5.8inch,那么我们就可以确定两段的相对位置了,因此总的身高范围就可以确定了。选项A就是对的了。
B选项,由于没有告诉我们男女生的人数,所以这个是无法确定的
C选项,这个选项跟上面的B差不多,没法确定。附上OG的解答,以作参考:
Choice B provides information about one of the centers of the data—the median; it does not say anything about how spread out the data are around that center. You are given that the median height of the males is 1.1 inches greater than that of the females. First note that it is possible for two different sets of data to have the same median but have very different ranges. Choice B gives the difference between the medians of the male heights and the female heights, without giving the actual medians. However, even if you knew the medians, the fact that the ranges can vary widely indicates that the range of the heights of the entire class can also vary widely. It is possible to construct examples of heights of students that satisfy all of the information in the question and in Choice B but have different ranges for the heights of the entire class. Here are two such examples, each of which has only three females and three males. Although the examples are small, they illustrate the fact that the range of the heights of the entire class can vary. In both examples, the range of female heights is 13.2, the range of male heights is 15.4, and the difference between the median heights is 1.1 inches.
Example 1
Female heights: 50.0 56.6 63.2 which have a median of 56.6
Male heights: 50.0 57.7 65.4 which have a median of 57.7
Range of heights of entire class: 15.4
Example 2
Female heights: 50.0 56.6 63.2 which have a median of 56.6
Male heights: 51.0 57.7 66.4 which have a median of 57.7
Range of heights of entire class: 16.4
Therefore, Choice B does not provide sufficient additional information to determine the range of the heights of the entire class.
Choice C provides information about another center of the data—the average. You are given that the average height of the males is 4.6 inches greater than that of the females. However, like Choice B, the statement gives no information about how spread out the data are around that center. Again, it is possible for two different sets of data to have the same average but have very different ranges. Examples similar to the two examples above can be constructed that satisfy all of the information in the question and in Choice C but have different ranges for the heights of the entire class. Therefore, Choice C does not provide sufficient additional information to determine the range of the heights of the entire class.
以上就是新东方在线为大家总结的GRE数学经典例题讲解:身高范围的相关内容,希望对大家有所帮助,最后预祝大家在GRE考试中取得优异的成绩!
---本文节选自新东方在线论坛
资料下载
2024中国学生留学备考白皮书下载
发布时间:2024-05-20添加新东方在线美研助教号
回复【资料】获取
GRE高频真词表资料下载
发布时间:2024-05-20添加新东方在线美研助教号
回复【资料】获取
GRE数学-OG官方150题资料下载
发布时间:2024-05-20添加新东方在线美研助教号
回复【资料】获取
GRE数学常用词汇资料下载
发布时间:2024-05-20添加新东方在线美研助教号
回复【资料】获取
2024GRE数学重点突破资料下载
发布时间:2024-05-20添加新东方在线美研助教号
回复【资料】获取
2024GMAT模考题&答案资料下载
发布时间:2024-05-20添加新东方在线美研助教号
回复【资料】获取
GRE&GMAT阅读难句教程资料下载
发布时间:2024-05-20添加新东方在线美研助教号
回复【资料】获取
2024年托福考试重点题目资料下载
发布时间:2024-05-20添加新东方在线美研助教号
回复【资料】获取
托福独立口语必练70题资料下载
发布时间:2024-05-20关注新东方在线美研订阅号
回复【GRE】获取
托福口语综合口语精听50题节选资料下载
发布时间:2024-05-20添加新东方在线美研助教号
回复【资料】获取
托福听力1200词资料下载
发布时间:2024-05-20添加新东方在线美研助教号
回复【资料】获取
托福写作综合写作练习册-听力精听25篇资...
发布时间:2024-05-20添加新东方在线美研助教号
回复【资料】获取
托福写作综合写作练习册-阅读改写50篇资...
发布时间:2024-05-20添加新东方在线美研助教号
回复【资料】获取
托福阅读核心词表1500词(前30天优先必学...
发布时间:2024-05-20添加新东方在线美研助教号
回复【资料】获取
添加美研助教号,
回复【GRE】获取备考必看资料包

推荐阅读
大家在备考GRE数学时对指数题肯定不陌生,一般来说,只要能够熟练掌握指数的运算规则就能应对大部分的题目,本文为大家介绍GRE数学考试中的指数题,希望对大家备考有所帮助!
大家在备考GRE数学时对指数题肯定不陌生,一般来说,只要能够熟练掌握指数的运算规则就能应对大部分的题目,本文为大家介绍GRE数学考试中的指数题,希望对大家备考有所帮助!
本文为大家整理了在GRE数学考试中容易犯的低级错误,各位准备考GRE的同学们赶紧收藏起来吧!
本文为大家整理了在GRE数学考试中容易犯的低级错误,各位准备考GRE的同学们赶紧收藏起来吧!
本文为大家整理了在GRE数学考试中容易犯的低级错误,各位准备考GRE的同学们赶紧收藏起来吧!
本文为大家整理了在GRE数学考试中容易犯的低级错误,各位准备考GRE的同学们赶紧收藏起来吧!
新版GRE推出后,数学部分时不时出现一些让考生“眼前一亮”的新颖题目,再加上题目数量减少,容错率降低,想要拿到GRE数学满分越来越难了。面对这种境况,各位GRE考生该如何应对呢?快来和新东方在线GRE一起看看吧!
ETS在其官网更新了一套新版考试免费样题(PPO for the shorter GRE),快来和新东方在线GRE一起看看新版GRE数学答题技巧相关信息吧!
干货!GRE数学备考建议指导来啦,来本文和新东方在线GRE一起来看看详细信息。
GRE数学超全公式汇总来啦,来和新东方在线GRE网一起来看看关于GRE数学公式汇总吧。
GRE/GMAT直播精讲小班
GRE/GMAT精讲智能系统课
托福直播/精讲课(30天/60天)
添加美研助教号,
回复【GRE】获取备考必看资料包

资料下载
添加新东方在线美研助教号
回复【资料】获取
添加新东方在线美研助教号
回复【资料】获取
添加新东方在线美研助教号
回复【资料】获取
添加新东方在线美研助教号
回复【资料】获取
添加新东方在线美研助教号
回复【资料】获取
添加新东方在线美研助教号
回复【资料】获取
添加新东方在线美研助教号
回复【资料】获取
添加新东方在线美研助教号
回复【资料】获取
关注新东方在线美研订阅号
回复【GRE】获取
添加新东方在线美研助教号
回复【资料】获取
添加新东方在线美研助教号
回复【资料】获取
添加新东方在线美研助教号
回复【资料】获取
添加新东方在线美研助教号
回复【资料】获取
阅读排行榜
相关内容