平均抽样数量曲线;平均样本数曲线

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(186) / 评论(0) 分类 数学英语

by Jason Marshall In recent articles, weve talked about two methods of calculating average values, the mean and the median, and weve talked about some everyday uses for them such as how to use median averaging to get better photos. But thats not all

发表于:2018-12-07 / 阅读(246) / 评论(0) 分类 数学英语

Estranged Family Gets Sports Fix in 'Trouble With The Curve' In Trouble With The Curve, Gus Lobel knows more about scouting new talent for baseball teams than anyone else in the business; but his failing eyesight and old-fashioned attitudes may end h

发表于:2018-12-16 / 阅读(231) / 评论(0) 分类 VOA标准英语2013年(一月)

MARY LOUISE KELLY, HOST: The government's latest report on GDP, the gross domestic product, shows the economy expanding at a lackluster 2 percent in the first quarter, but estimates for the second quarter are much higher. And that has the Trump admin

发表于:2018-12-18 / 阅读(160) / 评论(0) 分类 2018年NPR美国国家公共电台7月

Directions: Study the following graph carefully and write an essay in which you should 1) analyze the graph, and 2) give your comments on the trend. In recent years there has been a dramatic rise in the cell phones, which are now essential to mi

发表于:2018-12-18 / 阅读(147) / 评论(0) 分类 英语作文

After suffering a life-threatening illness, singer-songwriter Mary Chapin Carpenter had time to reassess her priorities. She came to believe in more fully appreciating the blessings each day brings From NPR News, this is weekend edition. I am Liane

发表于:2018-12-19 / 阅读(210) / 评论(0) 分类 2007年NPR美国国家公共电台

Have you been having some trouble getting some digits lately when you ask a girl out? Maybe you should check what music is playing. Thats what French psychologists found. They published their research in the journal Psychology of Music. First the res

发表于:2018-12-24 / 阅读(190) / 评论(0) 分类 Scientific American(六)月

P: Hey Yang Chen why are you playing Hail to the chief? I thought we were a sports show - are we going political? Y: Not really. You see, Patrick, the presidential election is in its final stretch - the home stretch - the final lap - just like in长跑

发表于:2018-12-25 / 阅读(249) / 评论(0) 分类 体育美语

by Jason Marshall In the last article, we talked about averages and one specific way statistics can help answer questions without letting emotions interfere. But the type of average value we talked about is just one of manyuseful meanings assigned to

发表于:2019-01-02 / 阅读(269) / 评论(0) 分类 数学英语

by Jason Marshall In the last few articles, weve talked about decimals and how theyre related to fractions through the process of division. Now, its time to turn our attention to some practical applications of these tools. Up first today were talking

发表于:2019-01-02 / 阅读(290) / 评论(0) 分类 数学英语

by Jason Marshall In the last article, we learned that there are several ways to calculate the average value of a sample of data. We focused on one such method, the arithmetic mean, and used it to calculate the average number of potato chips in a bag

发表于:2019-01-02 / 阅读(236) / 评论(0) 分类 数学英语

to throw a curve to throw for a loop 美国人在打棒球时经常喜欢发曲线球,使球的方向会发生突变,这样给对方造成错觉,不能回击那个球。这和其他球类运动,

发表于:2019-01-07 / 阅读(307) / 评论(0) 分类 美国习惯用语

By Paul Sisco Washington, DC 19 April 2006 watch Severe Weather report Several weeks of unusual and severe weather in the U.S. are not being specifically linked to global warming but they are causing

发表于:2019-01-13 / 阅读(197) / 评论(0) 分类 2006年VOA标准英语(四月)

C Isn't Average in All Schools Any More Theres an old, but often-played, song by the late Sam Cooke whose lyrics go, in part: Now I don't claim to be an A student But I'm trying to be. And so are millions of other American children each school term.

发表于:2019-01-13 / 阅读(168) / 评论(0) 分类 VOA标准英语2012年(五月)

C Isnt Average in All Schools Any More 字母不再用来表示成绩了 Theres an old, but often-played, song by the late Sam Cooke whose lyrics go, in part: 已故的山姆库克有首老歌经常有人表演,它的部分歌词是这样的: Now

发表于:2019-02-01 / 阅读(172) / 评论(0) 分类 VOA常速英语2013年(九月)

今天又要学两个在总统大选年里新闻界时常会用到的习惯用语,而且这两个习惯用语还是从美国人最心爱的消遣活动: 棒球赛中借用来的。 这两个习惯用语都和用牛皮制成的结结实实的棒球有

发表于:2019-02-05 / 阅读(501) / 评论(0) 分类 美国习惯用语

WASHINGTON, Jan. 27 (Xinhua) -- The number of Americans initially applying for unemployment aid last week rose by 51,000 from the previous(以前的) week, the U.S. Labor Department reported Thursday. The Labor Department said that the advance fi

发表于:2019-02-06 / 阅读(273) / 评论(0) 分类 英语新闻

Study the following graph carefully and write an essay in which you should 1) analyze the graph, and 2) give your comments on the trend. In recent years there has been a dramatic rise in the cell phones, which are now essential to millions of people

发表于:2019-02-18 / 阅读(141) / 评论(0) 分类 英语作文

You might think that just one cigarette 'can't hurt'. But it could in fact cost a smoker almost 14 minutes of their life, according to new calculations. A new website has worked out how much time a smoker, alcoholic or a drug addict will lose, each t

发表于:2019-02-20 / 阅读(204) / 评论(0) 分类 英语新闻

What is a fair wage? Why aren't more people in the world offered pay equality? These are some of the questions the United Nations International Labour Organisation (ILO) has recently investigated. With a global population of over seven billion, is it

发表于:2019-02-21 / 阅读(150) / 评论(0) 分类 英语听力精选进阶版
学英语单词
2-(morpholinothio)benzo-thiazole
acet.
active orary
Ainsliaea lancifolia
airborne radio relay
Almodan
amplified spontaneous emission noise
amylodextrine
antelmycin
antioxidant SP
Arequipa, Cerro
Auerbach's plexus
automatic air valve
battery backup
bhattacharya
blood collection
bluffdale
bottom organism
business communication
by one's self
cash security
caulis piperis futokadsurae
chef de partie
Cherdoyak
come to the end of one's tether
contract theory of society
convex hypersurface
corodies
cortex (or cortical substance)
Corydalis dasyptera
coursekeeping ability
cupric carbonate
cusped arch
cylinder pier
dctx
demonmia
differential compensation
diphenylcyanoarsine
disconcertment
disturbance of food intake
drastic extraction
educational expenses
Escorca
ever-smokers
fibrillogenic
findin'
gaddums
green gown
helper dog
hook hitch
impurity resistivity
investment income ratio
korng tauch
lincoln red cattle
linguister
Loi Mwe
medium wheat
mental patient
Musca autumnalis
node state
nominal zero
normoxic
nuptial gift
outstanding bank notes
paraneoplasias
phyllosticta magnoliae-pumilae
pictorial computer with courser
ploughwright
promiscuous plasmid
pronouncer
propalylonal
punctually
push and go
remonetises
roggery
roller bumper
rumbling
sample extreme
Scophthalmus aquosus
sectarian violence
shop-keeper
spoewslang
stagnation mastitis with fever
step gate
stinking goosefeet
stored nuclear track
subordinate words
Thnal Khsach
trace ideal
transport and communication facilities
turning performance
Tylerisms
type box
tyranture
vena vorticosums
ventrosuspension
Verkhnyaya Korsuga
wan (abbreviation)
whole team approach
yield error
yistai
Zaburun'ye