N******n 发帖数: 3003 | 1 理解的对吗?
odd ratio=1--->significant associated?
不过,按 p value解释就行了。 |
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J********J 发帖数: 571 | 2 问一个问题,
如果比较两组人群,回答分别是YES和NO的。数据如下:
A组:YES (9人),NO(1人);
B组:YES (6人),NO(4人);
这种情况下,因为A组回答NO的只有一人,所以没有办法计算A Vs B的Odds ratio?
我很菜,谢谢。 |
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k*******a 发帖数: 772 | 3 两个normal的ratio 是cauchy distribution
heavy tail, 所以t-test很容易reject |
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w*******9 发帖数: 1433 | 4 Odds ratio of what? When there's interaction term, the interpretation is not
so straight forward.
of |
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r*****g 发帖数: 99 | 5 Non linear model, hazard ratio 是y-axis, main exposure 是x-axis.
请赐教!不胜感激! |
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s*****t 发帖数: 119 | 6 在test difference in two sample mean的时候,不管data是什么分布,只要数据够大
,t-test可以用CLT来估计t-statistic的分布
如果用likelihood ratio test,是不是必须知道data的分布,有没有办法用normal来
approximate?比如说sample data是non-negative count data
谢谢! |
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h****y 发帖数: 9234 | 8 刚才开GT5, 整了辆Mustang V8,和电脑跑,结果直道的时候被电脑随便超.啥车都能超我
...
后来去买了个六速的close ratio变速箱,换掉了原厂的5速变速箱
再去跑,嗖嗖虐电脑....
仔细一看,那个六速的牺牲了最高时速(6档是0.9几的齿轮比), 但保证了更大限度地利用
发动机的输出.
而那个原装5速的,5档居然是0.7几的比,可想而知二三四档换档的间隔得非常长. 跑的时
候效果就是,三档加半天上不了四档, 四档跑半天转速上不去. 完全发挥不出那个V8 4.
6发动机的牛B性能...
怪不得我那同学说, 他试开人家3.6的mustang(5速),感觉不如他的2.5的sentra SE-R s
pec v(6速)给力.... |
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b******7 发帖数: 8200 | 9 以下数据选自官网。
http://mazdausa.com/MusaWeb/displayPage.action?pageParameter=mo
Differential Available torque-sensing limited-slip (manual transmission
only)
Gear Ratios (:1) 5MT 6MT 6AT
1st 3.14 3.82 3.54
2nd 1.89 2.26 2.06
3rd 1.33 1.64 1.40
4th 1.00 1.18 1.00
5th 0.81 1.00 0.71
6th 0.79 0.58
Reverse 3.76 3.60 3.17
Final drive 4.10 4.10 4.10
其实是两个问题,第一个:
5mt和6mt的2nd差不好大,哪个更好开? 貌似6mt那个我用2... 阅读全帖 |
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q**j 发帖数: 10612 | 10 AT has fuel efficient gear ratios, but the fluid in transmission loses power
. so it is a wash in the end. |
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x*b 发帖数: 5723 | 11 BMW把2015 X3(不管是28i还是35i)的ZF 8HP变速箱pair的final drive ratio 从3.15增
加到3.39了,这样直接带来0-60加速明显提升。2015 X3 28i从之前的6.7s变成现在的6
.2s,35i从5.7s提升至5.3s(官网均可查到)。这样35i就只比不加Sport Chrono Pkg的
Macan S慢0.1s了.
BMW啥时候搞福利不吱声了... |
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s******4 发帖数: 1541 | 12 还是要跟x5拉开点差距,个人觉得变速箱final gear ratio对0-60影响真不大。 |
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D*****I 发帖数: 8268 | 13 是啊,跟ZF有啥关系呢?
估计把高档的gear ratio也改了
但是0-60用到的档, 1-3档?不变的话,加速就会爽 |
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x*b 发帖数: 5723 | 16 奇怪了,我记得应该是3.15啊,难道我弄混了?
Anyway加速确实提升了,如果真的final ratio没变,估计就是碳大说的那样引擎重新
调教过?
★ 发自iPhone App: ChineseWeb 8.7 |
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w*******y 发帖数: 60932 | 20 The lowest price I found online was 1,599...this set regularly sells for
over 2,000
$1100 OFF - Sony BRAVIA XBR46HX909 46" 3D LED Backlight HDTV 1080p
Motionflow 240Hz Infinite Contrast Ratio BRAVIA Internet Video DLNA
Certified $1399.99 shipped after COUPON CODE: EAU25201 at TigerDirect:
http://www.tigerdirect.com/applications/SearchTools/item-detail
Enjoy a vanishing edge Monolithic design when it is off, plus improved
picture accuracy and deeper blacks with the OptiContrast panel technology
w... 阅读全帖 |
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w*******y 发帖数: 60932 | 21 Great Price for 50" Plasma TV
LG 50PT350 49.9"PLASMA HDTV,TRUSLIM,600HZ,3 M:1 CONTRAST RATIO
Link:
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g******y 发帖数: 2517 | 23 Sony HVL-F58AM High-Power Digital Camera Flash with Wireless Ratio Control
and Quick Shift Bounce for Sony Alpha Digital SLR,20%折扣http://amzn.to/sXwu34 |
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f****y 发帖数: 879 | 24 昨天看小人从学校带回来的flyer, 明年grade 1-3 改成1:30的ratio
这样小朋友们在学校能学到东西吗? 难道要再加一回子parcel tax?
除了cupertino别的学区怎么样呢? |
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f****y 发帖数: 879 | 25 我看上面说缺5M, 别的几项加起来都不够,觉得势在必行了。
晚上回去就去跟风写email.
今年做volunteer实在太影响工作了,如果ratio这么差一定又要家长积极参与了:( |
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S********a 发帖数: 1163 | 26 what is reasonable ratio ah? |
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B********0 发帖数: 472 | 27 Historically the ratio is about 40 according to wiki. Now it is close, but
when bubble breaks, it always overshoots.
Walstudio, any comments on weak euro? |
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C*G 发帖数: 7495 | 28 我老青蛙一直懵懵懂懂,
FA大都是跟C帅C美学的,青蛙学园手册都有指引,一般valuation,investment,
financial analysis各种书上都有,专业点的provision也有很多材料涉及risk/reward。
TA上,多有moving average/garch/volatility-correlation/covariance
/component-structure/time series-cointegration等 与risk/reward ratio相关的计
算方法.
hiahia |
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r****d 发帖数: 239 | 29 【 以下文字转载自 Financial_Ratio_Analysis 俱乐部 】
发信人: rueled (Wise investing), 信区: Financial_Ratio_Analysis
标 题: Apple's latest quarter Ratio Analysis
发信站: BBS 未名空间站 (Tue Jul 20 23:20:31 2010, 美东)
gross margin decreases due to ipad and iphone 4.
other than that, it looks all good to me. |
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S***a 发帖数: 1072 | 30 周五的VIX:VXV ratio 是0.83, 小于0.92,这样看起来已经OVERBOUGHT了,希望周二的
FOMC会有好消息... |
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t*******o 发帖数: 1464 | 31 More than often the ratio does not predict at all. It predicts well when
thing goes extremely risky. Cobra uses this as one of the indicator. |
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d****7 发帖数: 2241 | 32 【 以下文字转载自 PraticalTrading 俱乐部 】
发信人: googer (cutie), 信区: PraticalTrading
标 题: 10 Bank Stocks Trading Below Book Value
发信站: BBS 未名空间站 (Fri Jun 18 16:41:23 2010, 美东)
这篇文章对几个小银行做了一个比较好的介绍,包括 fbp, crbc, pcbc, bbx, prwt,
snv, bpop, cse, mi & c. 每个包括目前状态,资本充足与否,可能风险,资产品质以及可
能前景。 可做参考。
10 Bank Stocks Trading Below Book Value
FBP
First Bancorp (FBP) of San Juan, Puerto Rico was trading for just 0.2 times
tangible book value on Thursday, when shares closed at $1.06, down 54% year-
to-date.
TARP Status: ... 阅读全帖 |
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