数学是GMAT考试中容易拿下的部分,但是GMAT数学我们知道对基础知识的要求是比较高的。我们在做题的时候常常会碰到很多概念,小编给大家分享一些数学的概念,GMAT入门的考生要记得背诵:
下面我们主要列出GMAT数学概念中描述统计部分词汇:
1.平均数
2.中数
To calculate the median of n numbers,first order the numbers from least to greatest;if n is odd,the median is defined as the middle number,while if n is even,the median is defined as the average of the two middle numbers. For the data 6, 4, 7, 10, 4, the numbers, in order, are 4, 4, 6, 7, 10, and the median is 6, the middle number. For the numbers 4, 6, 6, 8, 9, 12, the median is /2 = 7. Note that the mean of these numbers is 7.5.
3.众数:一组数中的众数是指出现频率最高的数。
例:the mode of 7,9,6,7,2,1 is 7。
4.值域:表明数的分布的量,其被定义为最大值减最小值的差。
例:the range of1,7,27,27,36 is 36-= 37。
5.标准方差:
One of the most common measures of dispersion is the standard deviation. Generally speaking, the greater the data are spread away from the mean, the greater the standard deviation. The standard deviation of n numbers can be calculated as follows:
find the arithmetic mean ;
find the differences between the mean and each of the n numbers ;
square each of the differences ;
find the average of the squared differences ;
take the nonnegative square root of this average.
Notice that the standard deviation depends on every data value, although it depends most on values that are farthest from the mean. This is why a distribution with data grouped closely around the mean will have a smaller standard deviation than data spread far from the mean.
以上就是小编整理的GMAT考试数学部分常见的几个概念,GMAT数学对于考生的基础知识要求是比较高的。所以考生们在复习的时候要多多注意,GMAT入门的考生复习数学先从背诵基础知识开始做起吧。
国内英语资讯:Chinese premier calls for closer China-Britain cooperation
国内英语资讯:Beijings hukou reform brings 1st group beneficiaries
如何在秋季保持健康?
国内英语资讯:China, Belt and Road countries seek deeper cooperation on energy
国内英语资讯:Chinese vice premier meets senior Swedish banker
国内英语资讯:China, Vietnam eye closer industrial, trade cooperation
国内英语资讯:Chinas development support boosts peace, security in Africa: experts
科学家发现雾霾在让中国人变傻,男人傻得更快
国内英语资讯:China never deliberately pursues trade surplus in goods: premier Li
苹果醋是否有利于身体健康?
国内英语资讯:Senior CPC official calls for tougher crackdown on gang crime
国内英语资讯:Xi reiterates Chinas commitment to free trade, globalization
国内英语资讯:China Focus: China moves toward great modern socialist country
国内英语资讯:Chinese premier arrives in Belgium for working visit, ASEM summit
爸爸讲起冷笑话来,比西伯利亚寒潮更腻害
国内英语资讯:Chinas holiday to see peak in return trips on Sunday
国内英语资讯:China donates 500 bags, stationery to Lebanons orphans
反映现实生活的《中国式家长》受到玩家好评
炸鸡排其实是健康食品?但别和米饭甜点一起吃
国内英语资讯:Chinese vice premier stresses poverty relief through relocation
国内英语资讯:High-speed rail sees 880,000 passenger trips between mainland, Hong Kong in two weeks
你的睡觉时间,决定了你适合什么工作
想要延年益寿 你每天需要步行多少距离?
西班牙科学家3D打印“素食牛排” 卖相和味道一言难尽
国内英语资讯:China urges Eurasia to safeguard world economic recovery with multilateralism, openness, con
国内英语资讯:China, US agree to further enhance cooperation between militaries
国内英语资讯:China welcomes more partners, to take tougher actions on IPR protection
国内英语资讯:China, ASEAN vow to promote defense cooperation
《复仇者联盟4》杀青!导演的一张图,让粉丝懵圈了...
希腊圣托里尼岛禁止胖子骑驴 不是歧视胖子 而是驴的背要被压断了
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |