随机抽样误差, 正负性取样误差

A: Excuse me, Professor. I think there might be an error in my test score. B: Sure. Do you think that the total is wrong or that you got something marked wrong that should have been marked right? A: I think that the percentage is incorrect. B: Let's

发表于:2018-11-30 / 阅读(530) / 评论(0) 分类 英语情景对话-大学生活

Unit 12 Part B Opinion Polls Man: Do you know the thing that's always struck me as odd about opinion polls? Woman: What's that? Man: The percentages. Like recently there was a survey about what people thought about traffic, and petrol prices, and pub

发表于:2018-12-04 / 阅读(394) / 评论(0) 分类 全新版大学英语听说教程第四册

AS IT IS 2016-02-29 Egypt Says It Sentenced Boy, 4, to Prison in Error The Egyptian military admitted last week it made a mistake when sentencing a 4-year-old boy to prison for life. A mistaken identity and confusion inside the Egyptian court system

发表于:2018-12-08 / 阅读(455) / 评论(0) 分类 2016年VOA慢速英语(二)月

eight --- 八 eighty --- 八十 eighteen --- 十八 egg --- 蛋 error --- 错误 effort --- 努力 education --- 教育

发表于:2018-12-16 / 阅读(589) / 评论(0) 分类 用听的背单词-基础2000MP3(a-g)

A: Excuse me, Professor. I think there might be an error in my test score. B: Sure. Do you think that the total is wrong or that you got something marked wrong that should have been marked right? A: I think that the percentage is incorrect. B: Let's

发表于:2018-12-26 / 阅读(463) / 评论(0) 分类 大学生活-College Life

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(491) / 评论(0) 分类 商务英语必备1000字

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(455) / 评论(0) 分类 财会英语

1. Don't worry, be happy! 别担心,快乐点! 2. Look on the bright side. 看光明的一面。(往好的一面看。) 3. Keep your chin up. Everything will be all right. 抬头挺胸(不要气馁)。一切会没问题的。 4. Take it e

发表于:2019-01-08 / 阅读(509) / 评论(0) 分类 实用英语

[00:08.88]take a chance take advantage of tear up tend [00:14.26]冒险,碰运气 对...加以利用 撕毁,取消 倾向,趋向 [00:19.64]tend to the Givil War the Nobel Prize therefore [00:25.42]朝某方向,趋于 内战 诺贝尔奖 因此,所以

发表于:2019-01-10 / 阅读(481) / 评论(0) 分类 高中英语人教版高二

NEW YORK, Aug. 30 (Xinhua) -- French Open champion Li Na committed 54 unforced errors and was eliminated in the first round of the U.S. Open by 53rd-ranked teenager Simona Halep on Tuesday. Li, seeded sixth, lost 6-2, 7-5 to Romania's Halep, sufferin

发表于:2019-01-11 / 阅读(462) / 评论(0) 分类 英语新闻

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(385) / 评论(0) 分类 天天商务口语

Sorry,there is not text temporarily, Please help tingroom to look for it! 如果您能找到更好的听力原文,请发贴到 听力原文收集区 ,您将会获得10到30积分的奖励! Thank you!

发表于:2019-01-26 / 阅读(453) / 评论(0) 分类 有声阅读空间

发表于:2019-02-01 / 阅读(406) / 评论(0) 分类 财会英语

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(448) / 评论(0) 分类 英语每日一词

1.IRK:ENRAGE:: (A)whisper:mumble (B)wait:anticipate (C)invite:entertain (D)soothe:calm (E)suggest:urge 2.COUNTERMAND:ORDER:: (A)trespass:property (B)criticize:judgment (C)renovate:improvement (D)accuse

发表于:2019-02-05 / 阅读(395) / 评论(0) 分类 英文语法词汇

Are you inspired by Mahatma Gandhi? Gandhi quotes inspired millions of Indians to act in non-violent protest against British oppression. His own wisdom and philosophy can always inspire us. Here are the Gandhis Top 10 inspirational quotes that give y

发表于:2019-02-07 / 阅读(409) / 评论(0) 分类 英语美文

【中文解释】 errorist是指总是犯错却自认为正确的人,错误份子,瞪眼睛说瞎话。 【英文解释】 Someone who repeatedly makes mistakes. Says stuff he believes is true, but anyone with common sense can see he's wrong. A

发表于:2019-02-09 / 阅读(433) / 评论(0) 分类 美国俚语

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(379) / 评论(0) 分类 阅读空间

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(416) / 评论(0) 分类 实用英语

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(368) / 评论(0) 分类 英语口译
学英语单词
alpha-reductase
ambulacras
amyotaxia
atttenuate
authority vested in the people
ballsiness
barfuls
batch flour
bending curvature
bleacherss
Bosh-Omori seismograph
box turtle
braciole
brainstormed
breast of veal
bscs green version
business affair
cardiac fissure
cepharadione
cesium iodochloride
combo breakers
connectionlessmode network service
Corydalis amplisepala
crank angle between extreme positions
crop eugenics
cylinder bank
division police petty officer
duration of twilight
ectopic parathyroid in thymus
electronic body temperature balancer
em space
English sole
esthesioneuroblastoma
eutectoid alloy
exchange frequency
extra bright
feldkirchens
fermi-dirac statistic
filler metering feeder
flywheel-type alternator
form-drag
Funtana
gates foundation
general communications interface
guarinoite
half-rip saw
harmonic waves
helianthrone
high permeability pay
hippie punching
hypnotisingly
inertly
infallibly
inflict on
international balance of payments
jetiquette
king - nut
lankas
map use
mawmaw
mesosilicate
multistylus recorder
mushroom wine sauce
nanotransistors
nickel pellets
nonsorted step
optimum setting
Penning ionization spectroscopy
petty sergeant
pharmaceutical sleep therapy
photocytotoxicities
physical analogue
piston travel
polymignytes
posterior tentorium
prevent action of fish from escaping
prototype for trim
pulmonary air flow
pushback operation
racking up
Reaganite
regular summability method
reversed ratchet
reversing link
right to harvest
rowdiest
seete
Serbophile
single phase series motor
single-instrument control
st lawrence river
Steinmetz's constant
straight-through pulverized coal burner
tectono-eustatism
trilobitus
typings
urea-formaldehyde molding powder
valach
water-quality
weather-forecast