人口变动统计

by Jason Marshall Sometimes statistics* seems magical. Of course, there isnt really anything magical going onbut the fact that statistical methods can be used to pull useful information out of a hatful of messy data is, at a minimum, remarkable. And,

发表于:2018-12-07 / 阅读(131) / 评论(0) 分类 数学英语

by Jason Marshall In todays article, were wrapping-up our introductory series on fundamental statistics by talking about how knowledge of statistical quantities like the mean and standard deviation can help you understand the significance of the late

发表于:2018-12-07 / 阅读(86) / 评论(0) 分类 数学英语

UNIT 10 Text A PRE-READING TASK Exercise 1 Before reading the passage, consider the questions. 1. Do surveys play an important role in our life? 2. Are the figures in the survey always true? Why or wh

发表于:2018-12-11 / 阅读(171) / 评论(0) 分类 实用英语综合教程

[00:00.98]C So why is nature beginning to turn on us? [00:05.71]One answer is over-population. [00:07.86]The population of the world [00:09.12]is growing at the rate of 10,000 people [00:11.54]an hour,240,000 every day, [00:15.91]nearly 90 million a

发表于:2018-12-13 / 阅读(157) / 评论(0) 分类 北师大版高中英语模块8(选修)

1. break down,分解。 eg: You should break down your methods so that each method does a particular work. 你应当分解你的方法,让每个方法只做某一项工作。 2. statistics,统计,统计资料;statistics也指统计学。 eg:I happe

发表于:2018-12-18 / 阅读(82) / 评论(0) 分类 蒋健棠教你听英语广播

By Nico Colombant Dakar 21 March 2008 For the first time since 1984, Liberian census takers are visiting dwellings throughout the country to count the inhabitants. Overall estimates of the post-conflict population range widely from two to four milli

发表于:2019-01-07 / 阅读(80) / 评论(0) 分类 VOA标准英语2008年(三月)

Alice: Hello, I'm AliceFinn: And I'm Finn.Alice: And this is 6 Minute English! This week were talking about populationgrowth and the effects it might have on the world. At the moment itsestimated that there are about 7 billion people on the planet. F

发表于:2019-01-07 / 阅读(143) / 评论(0) 分类 六分钟英语

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Why bother with sex? Its a question thats bugged biologists since they first noticed that some critters do it and some dont. The answer theyve come up wi

发表于:2019-01-08 / 阅读(123) / 评论(0) 分类 Scientific American(十一)月

By Mike O'Sullivan Los Angeles 21 December 2007 Population statistics are hard to visualize, but an art exhibition in Los Angeles makes the numbers easier to grasp. Mike O'Sullivan reports that the exhibition, called Of All the People in All the Worl

发表于:2019-01-11 / 阅读(124) / 评论(0) 分类 VOA常速英语2007年(十二月)

There is a consensus among the delegates and world leaders attending the climate change conference in Copenhagen on the need to cut greenhouse gas emissions and shift to cleaner/more efficient energy. But a research center in Britain is espousing a d

发表于:2019-01-13 / 阅读(99) / 评论(0) 分类 VOA标准英语2009年(十二月)

AGRICULTURE REPORT - From Horses to Tractors, Changes in U.S. Agriculture By Mario Ritter Broadcast: Tuesday, June 21, 2005 I'm Gwen Outen with the VOA Special English Agriculture Report. Over the yea

发表于:2019-01-30 / 阅读(117) / 评论(0) 分类 农业与发展

今天我们要学的词是reflect。 Reflect, 是反映出的意思。The new statistics reflect a change in people's spending habits, 新的统计数字反映出人们消费习惯的变化。The school newspaper reflects the interests of the studen

发表于:2019-01-31 / 阅读(96) / 评论(0) 分类 英语每日一词

今天我们要学的词是reflect。 Reflect, 是反映出的意思。The new statistics reflect a change in people's spending habits, 新的统计数字反映出人们消费习惯的变化。The school newspaper reflects the interests of the studen

发表于:2019-01-31 / 阅读(87) / 评论(0) 分类 英语单词荟萃

population studies 人口研究 demography 人口学 demographer 人口学家 population theory 人口理论 Malthusianism 马尔萨斯主义 neo-Malthusianism 新马尔萨斯主义 overpopulation 人口

发表于:2019-02-02 / 阅读(98) / 评论(0) 分类 英文语法词汇

Currently, one in ten Chinese citizens is 65 or above. And this proportion is likely to increase to one third by the year of 2050. Meanwhile, the working population is also aging. Wang Jun, professor at Sun Yat-Sen University, says this trend would p

发表于:2019-02-06 / 阅读(92) / 评论(0) 分类 英语新闻

And so you may say, well, given all of that, why then doesn't it work? 你可能说,就算这样,为什么不奏效呢? Why can we not make our politicians change? Why can't we demand them? 为什么我们无法让政党改变?为什么我们无

发表于:2019-02-13 / 阅读(74) / 评论(0) 分类 TED演讲国际问题篇

How about the next question? This is asking about what the average age is, 那么下一个问题呢?这是问关于年龄的中位数, so the age at which half the population are younger and half the population are older. 也就是该地区大于和

发表于:2019-02-14 / 阅读(103) / 评论(0) 分类 TED演讲科学篇

Statistics New Zealand collects population numbers every year from 1st October to the end of September. The latest figures show that New Zealands population on September 30th was 4,414,400. This is equal to 0.06% of the worlds population. We have 33,

发表于:2019-02-17 / 阅读(118) / 评论(0) 分类 新西兰英语

population 母体 sample 样本 census 普查 sampling 抽样 quantitative 量的 qualitative/categorical 质的 discrete 离散的 continuous 连续的 population parameters 母体参数 sample statistics 样本统计量 descriptive statistics 叙述统

发表于:2019-02-18 / 阅读(112) / 评论(0) 分类 英语口译

This podcast is about listening to numbers. I have left the numbers out of the written text, so you will have to listen carefully to understand. Send me an e-mail if need help. What is Britain really like? How do British people really live when we ar

发表于:2019-03-01 / 阅读(130) / 评论(0) 分类 听播客学英语
学英语单词
1-androstendione
abdominal multivisceral transplantation
abortion pill
acid proof ceramic pipe
ackerman principle
active trading fleet
ague
average recovery rate
baker's garlic
biotic barrier
blade section chord
boiler with dry-bottom furnace
book of abstracts
break-
charles baudelaires
cloud particle
coarsen
Congress of the People
crab cocktails
customs warehouse
cybergames
Cyberian
debeige
dild
displaced-persons
double-welded butt joint
draw-latch
dysdiadokokinesis
elastic strian
elixothrips brevisetis
entities
equivalent reactance
exterieur
floristic kingdom
frame with narrowed front
garden pea plants
gasguzzler
half-reactions
haughtinesses
hermeticum
hutzpa
hydraulic evapotranspirometer
IMAA
indeterminate-term liability
japanese standards of food additives
law of the international sale of goods
light extinction
lithium sulfate detector
lithium-iodine cell
Lithocarpus tubulosus
magnification constant
Mal Paso, Pta.
megacin(e)
member of company union
methylthionine
microscopic fields
monactin
monsoon disturbance
mostomys natalensis
mulholland drive
multiple-motor
nalorphine
Nizhnyaya Grayvoronka
nonstandard logic
oculodynia
olfactive
Olosed
one-party principle
optical wave synthesis
Outokumpu flotation machine
p n p n junction
pallial chamber
panadas
pancreatic lymph nodes
papillary cystic adenocarcinoma
permanent blind distance
pinselle
powder inlet
product pricing
putamens
rational elasticity mechanics
reactor pressure vessel(closure)head
reafforestations
redirects
reflecting-block folding
restriction/methylation system
schizocalyx
simplex copying
Smithdale
social-development
speech-act
sporidiolum
straightline controller
São José do Norte
Tunica mucosa nasi
undue delay
Ust-Kamenogorsk
vesicle of penis
VRBL
Warburg's tincture
wood-lice
zwitter