拟随机抽样

数学英语 23 What are the Range and Standard Deviation?

by Jason Marshall Weve now talked about three methods for calculating average values: the mean, median, and mode (affectionately known as the three Ms). So, are we done? Is that everything we could ever want to know about interpreting average values?

发表于:2018-12-07 / 阅读(122) / 评论(0)

数学英语

北师大版高中英语模块11--Unit31(2)-4

[00:01.45]3 a) Answer as many of the questions [00:05.49]on the recording as you can. [00:07.47]Write the answers in a random order [00:09.55]on a piece of paper, [00:11.08]not in the same order as in the recording. [00:16.30]1. Write down the name o

发表于:2018-12-13 / 阅读(148) / 评论(0)

北师大版高中英语模块11(选修)

商务英语必备1000字 Unit30

QC procedure 品管流程 What issues do we need to address to work out new QC procedures? 在制定新品管流程之前，有哪些問題必須先處理？ quality standard 品質標準 This year, Metro Factory experienced a noticeable decline in q

发表于:2018-12-31 / 阅读(148) / 评论(0)

商务英语必备1000字

英语沙龙:Random Thoughts-Party

Random1) Thoughts-Party Last night,pressured by well－intentioned friends,for the first time in months,I came out of writers seclusion and attended a cocktail party which is another word for a social gathering.So there I was,trapped in a crowded roo

发表于:2019-01-01 / 阅读(166) / 评论(0)

英语沙龙

注册会计师考试《审计》中用到的128个英文单词

1.audit 审计 2.attestation 鉴证 3.credibility 可信赖程度 4.audit of financial statements 财务报表审计 5.agreed-upon procedures 执行商定程序 6.high levels of assurance 高水平保证 7.compilation 编制 8.reliability 可靠性 9

发表于:2019-01-03 / 阅读(147) / 评论(0)

财会英语

Random acts of kindness

Jennifer: Hello and a very warm and friendly welcome to the first 6 Minute English of 2013. My name is Jennifer and with me in the studio for today's programme is Callum. Happy New Year! Callum: Hi Jen - happy New Year! Jennifer: Have you made any Ne

发表于:2019-01-07 / 阅读(199) / 评论(0)

六分钟英语

SSS 2008-08-08

This is Scientific Americans 60-Second Science. Im Steve Mirsky. Got a minute? Ever been woken up by the sound of the refrigerator compressor kicking on? Well, such clumsy heat exchange units featuring long metal coils may be on their way out. Becaus

发表于:2019-01-08 / 阅读(109) / 评论(0)

Scientific American(八)月

SSS 2008-03-19

This is Scientific Americans 60-Second Science. I am Cynthia Graber. This will just take a minute. Ants are known for working together, operating as a unit for the good of the colony. But not so fast, say researchers from the Universities of Leeds an

发表于:2019-01-08 / 阅读(135) / 评论(0)

Scientific American(三)月

SSS 2011-10-05

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? The 2011 Nobel Prize in chemistry goes to Daniel Schechtman of the TechnionIsrael Institute of Technology in Haifa. Schechtman discovered what are called quasicrystals.

发表于:2019-01-08 / 阅读(156) / 评论(0)

Scientific American(十)月

VOA标准英语2010年-More US Companies Refuse to Hire Smoke

Americans who smoke are beginning to feel unwanted as federal laws prevent them from smoking in public buildings The World Health Organizations says smoking is considered a high risk factor in six of the eight leading causes of death worldwide. Medic

发表于:2019-01-08 / 阅读(102) / 评论(0)

VOA标准英语2010年(二月)

商务口语第66讲:制造工程(1)

1.Bending 弯曲 A: What kind of parts do you usually need to bend? B: Tubular parts or stampings. A：什么样的零件一般需要进行弯曲加工？ B：管状零件或冲压件。 2.Cycle time 工作周期 A: What is the cycle time of the injection molding machine？ B: Three

发表于:2019-01-21 / 阅读(88) / 评论(0)

天天商务口语

专业术语-财务英语词汇S3

发表于:2019-02-01 / 阅读(123) / 评论(0)

财会英语

每日一词【891】random：随机、任意的

今天我们要学的词是random。 Random, 是随机、任意的意思。The firefighters have to undergo a random drug test once a year, 消防队员每年要接受一次是否服用毒品的抽查。The boxer refused to submit random blood tests

发表于:2019-02-03 / 阅读(99) / 评论(0)

英语每日一词

学个词Learn a Word 第891期 Random

发表于:2019-02-03 / 阅读(81) / 评论(0)

英语单词荟萃

29 Ways to Carry Out Random Acts of Kindness Every Day

29 Ways to Carry Out Random Acts of Kindness Every Day The time has come when we cannot just rely on others to make the world a better place each one of us has to do our bit. It is therefore time for people to be more and more aware about their Perso

发表于:2019-02-07 / 阅读(100) / 评论(0)

阅读空间

大纲重点词汇复习

第一讲a-c, 第二讲d-h, 第三讲i-o, 第四讲p-s, 第五讲t-z 词汇复习第一讲a-c 1. 识记词汇 1. Some of the old traditions have been ____ as time goes by. [A] abandoned [B] abolished [C] absorbed [D] abused 2. You cant gain ____ to t

发表于:2019-02-13 / 阅读(95) / 评论(0)

实用英语

男人每隔多久就会“性”趣盎然？

It's a stat that gets bounced around as e-mail-forward wisdom: men think about sex every seven seconds. Even when the idea lacks this mythical specificity and grandiosity (that's 7,200 times a day!), the idea that men think about sex basically all th

发表于:2019-02-17 / 阅读(101) / 评论(0)

阅读空间

分类词汇：人口普查

natality 生育 fertility 生育率 fecundity 生育能力 birth rate, natality rate 出生率 births 出生人数 parity 胎次 premature birth 早产 life birth 活产 stillbirth 死产 birth peaks 出生高峰 mortality 死亡 mortality rate 死亡率

发表于:2019-02-18 / 阅读(112) / 评论(0)

实用英语

翻译考试词汇必备：统计学名词词汇（二）

left-skewed 左偏 negative-skewed 负偏 right-skewed 右偏 positive-skewed 正偏 contingency table 列联表 sampling distribution (of a statistic)(某个统计量的) 抽样分布point estimate 点估计值 point estimator 点估计式 unbiased

发表于:2019-02-18 / 阅读(106) / 评论(0)

英语口译

英文摇滚歌曲：Random Eyes - Tell me

Can you see it in my eyes? The emptiness Looking for a reason Is it time for the last goodbye? What if I don't know this game? What if I don't care? What if I want to know the reason why? Tell me Do you still believe The sun will rise again? To hold

发表于:2019-03-02 / 阅读(214) / 评论(0)

英文摇滚歌曲

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学英语单词

account statement

adjustable gang-condenser