a********a
发帖数: 346 | 1 Thanks songkun, the question may not be clear.
1. This is a survey data set. I only listed part of the data set. Assume 42
people answered the survey. For the variable (question) X, 12 people
answered A, 4 answered B, 24 answered C, and 2 answered D.
2. I want to test whether the proportion that people answer A is equal to
the proportion people answer B, the proportion that people answer A is equal
to the proportion people answer C, so on.
Can we do this test? Thanks.
|
|
X*****r
发帖数: 2521 | 2 【 以下文字转载自 EE 讨论区 】
发信人: Xfilter (May you peace in Heaven, Liviu Librescu), 信区: EE
标 题: 哪位能给一个直观的proportional fairness的定义？
发信站: BBS 未名空间站 (Sat Jun 30 14:24:19 2007), 转信
看那个公式看了好多次了
总是不能很直观的理解
哪位大虾能给一个直观的解释?
到底怎么是proportional fairness？
好像很难理解啊 |
|
a********a
发帖数: 346 | 3 Can we test the proportion difference of A 12/(12+4+24+2) vs the proportion
of B 4/(12+4+24+2), A 12/(12+4+24+2) vs C 24/(12+4+24+2), etc?
Thanks |
|
t******g
发帖数: 1136 | 4 If the status is single, renting home, and H1B, what proportion of tax you
will get back? Mine is:
Fedex tax is about 57%
State tax is about 60%
Is it low, high or normal?
Thanks |
|
C*****a
发帖数: 17 | 5 比方说有甲、乙2个车队争过一座one-way的大桥（可以推广到N个车队），桥头有个交
警（scheduler）来控制车辆上桥，假如说这座大桥在单位时间内最多只允许通过30辆
车，同时规定甲、乙两个车队在单位时间内允许上桥的车辆总数的比例为2:1，则在任
意长的一个时间段内两个车队各自上桥的车辆总数的比为2:1，例如在单位时间里交警
允许甲车队的20辆车上了大桥同时允许乙车队的10辆车上了大桥，则就可以说这个交警
对两个车队是proportional fair的。（这是最理想的情况，实际上只能尽可能接近，
举的这个例子不知道说清楚没有，呵呵） |
|
m*****8
发帖数: 27 | 6 A poll by Louis Harris and Associates of 1249 adult Americans indicated that
36% believe in ghosts and 37% believe in astrology. Can you compare the
proportions using inferential methods for independent binomial samples? If
yes, do so. If not, explain why not. |
|
a********a
发帖数: 346 | 7 I have a count data, one variable X has several categories, such as
X count
A 12
B 4
C 24
D 2
I want to have a proportion test in SAS to compare any two levels of X, i.e.
A vs B, A vs C, A vs D, B vs C, B vs D, C vs D.
How can I do this test? Thanks |
|
D******n
发帖数: 2836 | 8 what proportion test? test what? little can be tested here.
e. |
|
s*****n
发帖数: 2174 | 9 I guess you have to address the question clearly. What you said sounds like
a exploratory analysis instead of a test. It is just like the case that I
bought 2 apples and 1 roasted chicken from a grocery store, and someone
wants to test the proportion of apple vs chicken.
To test, you have to clearly define the question:
1. What exactly is the procedure like?
For example, are you picking samples from a (infinitely large or fixed size)
population, and conduct an on-going count? This usually reveal |
|
p**n
发帖数: 1437 | 10 Bayesian analysis of the difference of two proportions
Authors: T. Pham-Gia Ph.D.,FIS a; N. Turkkan b;P. Eng b
Published in: journal Communications in Statistics - Theory and Methods,
Volume 22, Issue 6 1993 , pages 1755 - 1771
学校E-lib里居然没有订……急求，信箱：y*[email protected]
多谢！ |
|
t*******0
发帖数: 64 | 11 对的，RACE有4个level: A, B, C, O. 但是Cox proportional regression只要用RACE=
"B" 做predictor。 |
|
m*******7
发帖数: 244 | 12 Why is Cox Proportional Hazard Model semi-parametric method? |
|
h******3
发帖数: 190 | 13 刚进program, 没学过survival analysis, 基础也奇差，但是为了一个project只能自
学。
Does cox proportional hazard model control for type 1 error?
Just wondering if there are many covarites, the likelihood that one of
coefficients is significant should be quite high.
I realize score test is also called log rank test. Is the log rank test for
coxph in some way related to the log rank test for kaplan meier?
If data is not complete for all covariates, can the subject still be used
and in what way?
多谢帮忙！ |
|
j******n
发帖数: 2206 | 14 dependent variable is a proportion, between 0 and 1.
which sas model should I use?
thanks |
|
j******n
发帖数: 2206 | 15 好像还是不行，没有一个predictor significat,something is wrong.
我的proportion都偏低，大部分在0.1以下。 |
|
f******e
发帖数: 541 | 16 有人知道怎么在sas里面test proportional odds assumption in multi-level models
吗？
是不是现在还不能在multilevel models里面test啊？
我查了好久也没查出来。求高手指教。谢谢 |
|
f******e
发帖数: 541 | 17 读到一个文献说目前还没有可以在multilevel里面测试proportional odds assumption
. 想求证下。 |
|
y**3
发帖数: 267 | 18 Hello,
I am building a time series model. The first couple of years I have 8 data
points.
but this year I have 10 data points. I am trying to convert the 10 data
points to 8 proportionally so that I can use all they years data to catch
seasonality( the differences between two nearest neighbors within one year
are different .
Is there a sound mathematical way to achieve this? Thanks |
|
y**3
发帖数: 267 | 19 Hello,
I am building a time series model. The first couple of years I have 8 data
points.
but this year I have 10 data points. I am trying to convert the 10 data
points to 8 proportionally so that I can use all they years data to catch
seasonality( the differences between two nearest neighbors within one year
are different) .
Is there a sound mathematical way to achieve this? Thanks |
|
w******z
发帖数: 1872 | 20 这过半那是妥妥的了， 真不容易啊 现在只剩下民主党希老太太还在和三德子苦苦鏖
战， 真是太有喜感了， 这一个月前都不敢想象啊
State Date ▾ Delegates Trump Cruz Rubio Kasich
Primary/
Caucus Delegate
Allocation Open/
Closed
(1,237 Needed to Win) - 2,472 1209 568 166 161 - -
-
California June 7 172 Primary Winner Take All&#
8711; Closed
Montana June 7 27 Primary Winner Take All
Open
New Jersey June 7 51 Primary ... 阅读全帖 |
|
s*****0
发帖数: 357 | 21 周末杂事比较多，小孩的playdate，还有和朋友约定的网战等等，未能及时更新，见谅。
感谢楼上hbsr2010的一些概念更正，平时理论接触的少了，记忆有偏差，因为在网上随
便写些，也懒得查书，写的时候随兴所至，没有太注意。我尽量让文笔轻快些，让读者
不至于厌烦。以后尽量会避免误导，如有不确实之处，请务必指正。先行谢过了，因为
有自己的一摊东西要收拾，不能像做科研那样严谨了。
前文提到的t test, one way ANOVA以及相关的nonparametric都只有涉及到一个
variable，比如作对照实验，variable即treatment type，不同计量药物或者是
placebo。组和组的区分是由这个variable决定的。在涉及到更为复杂的模型前(比如
two way ANOVA, multiple regression)，我觉得还是先唠叨唠叨categorical data的
统计方法，毕竟做multiple regression之类的工作需要一定的统计背景，平时远没有
Chi-square这样的test用得多。所以先简后难了。
Categorical data在生... 阅读全帖 |
|
G****a
发帖数: 10208 | 22 America’s Most Livable States
10. Maryland
> Future livability score: 18.5
> Full-time employment: 3rd best
> Job creation index: 24th best
> Outlook on life in five years: 16th best
Maryland is the state with the 10th-best outlook in the country, according
to Gallup’s Future Livability survey. The state has the wealthiest
population in the nation based on median household income, according to
recent Census data. Also, just 8.4% of Maryland households live below the
poverty line, compared to the... 阅读全帖 |
|
P****D
发帖数: 11146 | 23 You didn't specify your hypothesis clearly so I am not sure these apply.
Just somewhere to start with.
------
Power Analysis of Non-Inferiority Tests of Correlated Proportions
Page/Date/Time 1 3/19/2013 12:43:35 PM
Numeric Results for a Non-Inferiority (One-Sided) Test of a Difference
Sample Equiv. Actual Treatment Standard Nuisance
Size Difference Difference Proportion Proportion
Parameter
Power (N) (De) (Da) (Pt) (Ps) (P01+P10) A... 阅读全帖 |
|
f**d
发帖数: 768 | 24 这是一本计算神经科学的优秀著作，全文拷贝这里（图和公式缺），有兴趣的同学可以
阅读
如需要，我可以分享PDF文件（－－仅供个人学习，无商业用途）
From Computer to Brain
William W. Lytton
From Computer to Brain
Foundations of Computational Neuroscience
Springer
William W. Lytton, M.D.
Associate Professor, State University of New York, Downstato, Brooklyn, NY
Visiting Associate Professor, University of Wisconsin, Madison
Visiting Associate Professor, Polytechnic University, Brooklyn, NY
Staff Neurologist., Kings County Hospital, Brooklyn, NY
In From Computer to Brain: ... 阅读全帖 |
|
t*****r
发帖数: 1765 | 25 （纽约州），这就是你在
国内的认证机构会收到这样一份表格，以前主要是给学校填的，如下，英文还看不明白
的，中文翻译在最下面。本文仅供参考交流，如有律师中介协助办理，以律师为准。
Verification of Academic Record
CGFNS P.O. Box 8628，Philadelphia PA 19104-8628 USA Telephone(215)349-8767
Fax(215)349-0026 Email:e****[email protected]
Applicant Name:____1____ Date of Birth:______2_______
Type of Program:______3___ Years of Education Required for Admission:______4
____
Name of Degree/Diploma Awarded:________________5____________________________
(Please print title of degree/diploma in native lang... 阅读全帖 |
|
c*********d
发帖数: 9770 | 26 On September 8, 2004 60 Minutes aired a report on President Bush's Air
National Guard service, based on notes from the personal records of the late
Lieutenant Colonel Jerry B. Killian. These consisted of multiple memos
regarding Bush's failure to attend a physical and meet other standard
requirements. Lieutenant Killian had died in 1984 and CBS relied on the
opinion of handwriting analysts and document experts who believed the
material was authentic.
"Documents obtained by the CBS News program "... 阅读全帖 |
|
D*********n
发帖数: 279 | 27 http://en.wikipedia.org/wiki/Native_Americans_in_the_United_Sta
Native Americans in the United States
From Wikipedia, the free encyclopedia
Jump to: navigation, search
"American Indian" redirects here. For other indigenous peoples, see
Indigenous peoples of the Americas and other geographic regions. For
Americans from South Asia, see Indian American.
This article may be too long to read and navigate comfortably. Please
consider splitting content into sub-articles and/or condensing it. (January
2... 阅读全帖 |
|
c*********d
发帖数: 9770 | 28 【 以下文字转载自 Mod_CHN_Hist 讨论区 】
发信人: chinabbsdad (张果老他爹), 信区: Mod_CHN_Hist
标 题: 张春桥：论对资产阶级的全面专政（汉英对照）
发信站: BBS 未名空间站 (Thu Nov 21 06:51:57 2013, 美东)
张春桥：论对资产阶级的全面专政（On Exercising All-Round Dictatorship Over
the Bourgeoisie）
无产阶级专政问题，是长期以来马克思主义同修正主义斗争的焦点。列宁说“只有承认
阶级斗争、同时也承认无产阶级专政的人，才是马克思主义者。”
THE question of the dictatorship of the proletariat has long been the focus
of the struggle between Marxism and revisionism. Lenin said, “Only he is a
Marxist who extends the recognition of the class struggle t... 阅读全帖 |
|
h*********r
发帖数: 10182 | 29 是你胡说八道。
-------------------------------------------------------------------
Income tax[edit]
Either a progressive or proportional income tax is levied by the
Confederation and by the cantons on the income of natural persons. The
income tax is imposed as a payroll tax on foreign workers without a
residence permit,[12] and in the form of a withholding tax on certain
transient persons, such as foreign musicians performing in Switzerland.
Taxable income includes all funds accruing to a person from a... 阅读全帖 |
|
p*****V
发帖数: 43 | 30 I am doing genetic association study. In order to adjust for ethnicity
difference， we genotyped SNPs for ancestry informative marks (AIMs). we
calculated population proportions based on these AIMs. Each subject has 4
population proportions. The sum of these 4 population proportions is equal
to 1. For example, for subject A, pop1 = 0.7, pop2=0.1, pop3=0.15, pop4=0.05
. These 4 population proportions provide ethnicity information. If we add 4
population proportions into the model, there will be a ... 阅读全帖 |
|
c*********d
发帖数: 9770 | 31 张春桥：论对资产阶级的全面专政（On Exercising All-Round Dictatorship Over
the Bourgeoisie）
无产阶级专政问题，是长期以来马克思主义同修正主义斗争的焦点。列宁说“只有承认
阶级斗争、同时也承认无产阶级专政的人，才是马克思主义者。”
THE question of the dictatorship of the proletariat has long been the focus
of the struggle between Marxism and revisionism. Lenin said, “Only he is a
Marxist who extends the recognition of the class struggle to the recognition
of the dictatorship of the proletariat.” And it is precisely to enable us
to go by Marxism and not revisionism in both theory an... 阅读全帖 |
|
n**a
发帖数: 52 | 32 1. suppose four colors are there, we did a survey. People (n) choose
different colors (red, green, yellow, blue).
we get the proportion of people who use red as x1/n.
What is the accuracy for this?
2. Imaging now that we know from prior studies that a certain proportion of
users responds to questions randomly. How can we assess this proportion of "
random clickers"?
第一题就是用large sample proportion算一个confidence interval.
第二题让你估计proportion of "random clickers"。问题是都是混在一起做survey的
，一个极端的例子是所有人都是random ... 阅读全帖 |
|
n**a
发帖数: 52 | 33 1. suppose four colors are there, we did a survey. People (n) choose
different colors (red, green, yellow, blue).
we get the proportion of people who use red as x1/n.
What is the accuracy for this?
2. Imaging now that we know from prior studies that a certain proportion of
users responds to questions randomly. How can we assess this proportion of "
random clickers"?
第一题就是用large sample proportion算一个confidence interval.
第二题让你估计proportion of "random clickers"。问题是都是混在一起做survey的
，一个极端的例子是所有人都是random ... 阅读全帖 |
|
p*********e
发帖数: 32207 | 34 ☆─────────────────────────────────────☆
weatherx (贫农--砖头党，金牌小密探) 于 (Wed Jul 15 13:36:00 2009, 美东) 提到:
我日。
http://www.autoblog.com/2009/07/15/video-tata-nano-gets-its-cra
☆─────────────────────────────────────☆
fatboyslim (fatboyslim) 于 (Wed Jul 15 13:41:11 2009, 美东) 提到:
我没根据，胡猜的。
nano是自己设计的，整体上考虑了安全性。
landwind的原型isuzu的那个能在美国卖，安全性应该也不差，但是江铃拿掉了很多东
西，或者材料上以次充好，结果车身强度大为降低。
是不是因为nano车本身轻crash test也很站便宜。
帝国主义亡我之心不死，crash test作弊！哈哈
☆─────────────────────────────────────☆
weatherx (贫农--砖头党，... 阅读全帖 |
|
m**c
发帖数: 7299 | 35 【 以下文字转载自 Military 讨论区 】
发信人: msgc (为了下一代免遭变态残害), 信区: Military
标 题: 43%杀手 69% 的连环杀手是GAY/homosexuals
发信站: BBS 未名空间站 (Fri Sep 14 15:25:34 2012, 美东)
这是现在被严禁的学术研究! GAY最骄傲的就是堵住人的嘴,掩盖事实真相,欺骗无知人
的同情........
Homosexuality among Serial Killers: Statistics
Source, "over 43%": "Homosexual Rape and Murder of Children", published in
Journal of the Family Research Institute, Vol. 18 No. 1, Feb 2003.
Technically, 69% of the serial killers in this study were homosexuals (i.e.,
people who were self-described ho... 阅读全帖 |
|
U*E
发帖数: 3620 | 36 这是现在被严禁的学术研究! GAY最骄傲的就是堵住人的嘴,掩盖事实真相,欺骗无知人
的同情........
Homosexuality among Serial Killers: Statistics
Source, "over 43%": "Homosexual Rape and Murder of Children", published in
Journal of the Family Research Institute, Vol. 18 No. 1, Feb 2003.
Technically, 69% of the serial killers in this study were homosexuals (i.e.,
people who were self-described homosexuals or people who had engaged in
homosexual behavior immediately prior to, during, or after committing their
murders). The lower statistic of... 阅读全帖 |
|
m**c
发帖数: 7299 | 37 这是现在被严禁的学术研究! GAY最骄傲的就是堵住人的嘴,掩盖事实真相,欺骗无知人
的同情........
Homosexuality among Serial Killers: Statistics
Source, "over 43%": "Homosexual Rape and Murder of Children", published in
Journal of the Family Research Institute, Vol. 18 No. 1, Feb 2003.
Technically, 69% of the serial killers in this study were homosexuals (i.e.,
people who were self-described homosexuals or people who had engaged in
homosexual behavior immediately prior to, during, or after committing their
murders). The lower statistic of... 阅读全帖 |
|
l****z
发帖数: 29846 | 38 600,000 move out in decade of 'white flight' from London: White Britons are
now in minority in the capital
Census figures show that 620,000 white Britons left the capital in a
decade
White Britons are the minority in London for the first time
They make up 45 per cent of London's population, with Asians being the
second largest group
By Jack Doyle
PUBLISHED: 16:19 EST, 20 February 2013 | UPDATED: 19:22 EST, 20 February
2013
More than 600,000 white British Londoners have left the capit... 阅读全帖 |
|
g*********n
发帖数: 808 | 39 Senator Carol Liu
https://www.facebook.com/SenatorLiu
Thanks for your comments. SCA 5 passed the Senate 27-9 on January 30, 2014.
I voted “aye.” There has been a significant drop in the percentage of
enrolled minority students at both University of California and California
State University campuses. The proportion of underrepresented students
eligible for U.C. and C.S.U. has not kept pace with the proportion of the
high school graduating class that they now represent. SCA 5, if approved by
vote... 阅读全帖 |
|
f*******7
发帖数: 2210 | 40 请认真读规则，这叫proportional么？我真的无语了，请多学习下再发言。
108 district delegates are to be allocated to presidential contenders based
on the primary results in each of the 36 congressional districts: each
congressional district is assigned 3 National Convention delegates. These
delegates are allocated to the presidential contenders as follows:
If a candidate receives a majority of the vote (more than 50%), that
candidate is allocated all 3 of the district's delegates. [General Rules for
All Conventions and Meet... 阅读全帖 |
|
f*******7
发帖数: 2210 | 41 请认真读规则，这叫proportional么？我真的无语了，请多学习下再发言。
108 district delegates are to be allocated to presidential contenders based
on the primary results in each of the 36 congressional districts: each
congressional district is assigned 3 National Convention delegates. These
delegates are allocated to the presidential contenders as follows:
If a candidate receives a majority of the vote (more than 50%), that
candidate is allocated all 3 of the district's delegates. [General Rules for
All Conventions and Meet... 阅读全帖 |
|
d****t
发帖数: 372 | 42 这个教授本人是个jew, 却是个反华先锋! 大家应该反击它才对!
http://www.arthurhu.com/index/matloff.htm
Norman Matloff, The Hatchet Man of Asian Immigration
(Arthur Hu's Norm Matloff fan site) | New additions
Arthur Hu's Norman Matloff page
http://www.arthurhu.com/index/matloff.htm
2 Quick Intros to Matloff / Immigration Issues
Asian Focus April 1998: The Chinese Must Go! Matloff's Myth of a Programmer
Shortage
George Nichol's Other Matloff Fan Site (easier to navigate than this one!)
Where Matloff's been Published
How to C... 阅读全帖 |
|
N*********6
发帖数: 2302 | 43 明天好好读。xxsl..
In California, SCA 5 may be DOA due to Asian Americans against affirmative
action
March 14, 2014 1:06 PM
For a change, there's a movement to restore affirmative action, and not to
end it.
Unfortunately, because of some short-sighted Asian Americans, SCA 5 may die
before it can get to the electorate.
SCA 5 is Senate Constitutional Amendment No. 5, which seeks to overturn
Proposition 209 in California. That was the initiative that won a simple
majority at the ballot in 1996 and ended ... 阅读全帖 |
|
f******d
发帖数: 6361 | 44 WASHINGTON (AP) -- For more Americans, being out of work has become a semi-
permanent condition.
Nearly one-third of the unemployed -- nearly 4.5 million people -- have had
no job for a year or more. That's a record high. Many are older workers who
have found it especially hard to find jobs.
And economists say their prospects won't brighten much even after the
economy starts to strengthen and hiring picks up. Even if they can find a
job, it will likely pay far less than their old ones did.
The o... 阅读全帖 |
|
s*****e
发帖数: 21415 | 45 ☆─────────────────────────────────────☆
nbnb (自强不息厚德载物) 于 (Thu Jun 23 18:00:50 2011, 美东) 提到:
Sensor Size Doesn’t Matter
Conventional wisdom says that the camera with the biggest sensor will be
the best. That’s such a gross oversimplification as to be almost a lie.
Conventional Wisdom
Conventional wisdom says that the larger the pixel sensor element size,
the cleaner and more noise free the image will be. Therefore, there has been
a trend over the last few years to increase the s... 阅读全帖 |
|
m**c
发帖数: 7299 | 46 这是严禁的学术研究!
Homosexuality among Serial Killers: Statistics
Source, "over 43%": "Homosexual Rape and Murder of Children", published in
Journal of the Family Research Institute, Vol. 18 No. 1, Feb 2003.
Technically, 69% of the serial killers in this study were homosexuals (i.e.,
people who were self-described homosexuals or people who had engaged in
homosexual behavior immediately prior to, during, or after committing their
murders). The lower statistic of 43% cited above is the proportion who were... 阅读全帖 |
|
m**c
发帖数: 7299 | 47 【 以下文字转载自 Military 讨论区 】
发信人: msgc (为了下一代免遭变态残害), 信区: Military
标 题: 43%杀手 69% 的连环杀手是GAY/homosexuals
发信站: BBS 未名空间站 (Fri Sep 14 15:25:34 2012, 美东)
这是现在被严禁的学术研究! GAY最骄傲的就是堵住人的嘴,掩盖事实真相,欺骗无知人
的同情........
Homosexuality among Serial Killers: Statistics
Source, "over 43%": "Homosexual Rape and Murder of Children", published in
Journal of the Family Research Institute, Vol. 18 No. 1, Feb 2003.
Technically, 69% of the serial killers in this study were homosexuals (i.e.,
people who were self-described ho... 阅读全帖 |
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t**********m
发帖数: 205 | 48 来自主题: Mathematics版 - 伟哥之乐 The joy of viXra
https://telescoper.wordpress.com/2011/05/19/
Posted in The Universe and Stuff with tags arXiv, astronomy, Cosmology,
Physics, scientific publishing, viXra on May 19, 2011 by telescoper
From time to time on this blog I post rants about the state of scientific
publishing, open access, the importance of the arXiv for astronomy and
cosmology, and so on.
This morning, however, I discovered an “alternative” side to the whole
business of online science, a site by the name of viXra. Mos... 阅读全帖 |
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h********g
发帖数: 5 | 49 Ming Liu and Fuqian Yang, Finite element simulation of the effect of
electric boundary conditions on the spherical indentation of transversely
isotropic piezoelectric films, Smart Materials and Structures 21 (2012)
105020 (10pp)
Finite element simulation was used to analyze the effect of electric
boundary conditions on the
indentation deformation of a transversely isotropic piezoelectric film
with the contact radius
much larger than the film thickness. Six different combinations of... 阅读全帖 |
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t**********m
发帖数: 205 | 50 The joy of viXra
https://telescoper.wordpress.com/2011/05/19/
Posted in The Universe and Stuff with tags arXiv, astronomy, Cosmology,
Physics, scientific publishing, viXra on May 19, 2011 by telescoper
From time to time on this blog I post rants about the state of scientific
publishing, open access, the importance of the arXiv for astronomy and
cosmology, and so on.
This morning, however, I discovered an “alternative” side to the whole
business of online science, a site by the name of viXra. Mos... 阅读全帖 |
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