t**********8
发帖数: 1683 | 1 【 以下文字转载自 Military 讨论区 】
发信人: twinlight198 (雙灯), 信区: Military
标 题: Race differences in average IQ are largely genetic
发信站: BBS 未名空间站 (Mon May 20 22:37:57 2013, 美东)
Race differences in average IQ are largely genetic
Published on April 26, 2005 at 5:29 PM · 122 Comments
inShare.2A 60-page review of the scientific evidence, some based on state-
of-the-art magnetic resonance imaging (MRI) of brain size, has concluded
that race differences in average IQ are largely genetic.
The lead article in the J... 阅读全帖 |
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t**********8
发帖数: 1683 | 2 Race differences in average IQ are largely genetic
Published on April 26, 2005 at 5:29 PM · 122 Comments
inShare.2A 60-page review of the scientific evidence, some based on state-
of-the-art magnetic resonance imaging (MRI) of brain size, has concluded
that race differences in average IQ are largely genetic.
The lead article in the June 2005 issue of Psychology, Public Policy and Law
, a journal of the American Psychological Association, examined 10
categories of research evidence from around th... 阅读全帖 |
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a****1
发帖数: 654 | 3 这个图 come from <>
Race Mean I.Q Mean brain size (cc)
East-Asians 105 1416
Europeans 100 1369
South-East Asians 90 1332
Pacific Islanders 85 1317
South Asians and North Africans 84 1293
Africans 67 1282
Indigenous Australians (aborigines) 62 1225
OverviewAs with Lynn's and Tatu Vanhanen's 2... 阅读全帖 |
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l****z
发帖数: 29846 | 4 9/12/2012
by Scott Reeder
Journalist in Residence
ReederReport.com
You’ll hear a lot of numbers bandied around in the coming days regarding
the Chicago Teachers Union strike – average salary, anticipated size of the
district’s deficit, level of state financial support.
But the number I find most disturbing is: 19.
That’s what the average Chicago Public School teacher scored on the ACT
test if they took it when attending high school, according to a 2008
Southern Illinois University study.
Despite... 阅读全帖 |
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l****z
发帖数: 29846 | 5 By CHRISTINE ARMARIO, Associated Press
June 12, 2012
When those college tuition bills come in, be prepared for sticker shock.
The average tuition at a four-year public university climbed 15 percent
between 2008 and 2010, fueled by state budget cuts for higher education and
increases of 40 percent and more at universities in states like Georgia,
Arizona and California.
The U.S. Department of Education's annual look at college affordability also
found significant price increases at the nation's pr... 阅读全帖 |
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T*****E
发帖数: 1432 | 6 看来大家想得和我的确不一样
我的经验是：
1) short position,绝不average down
2) long position,一般也不average down,最多average down一次
3) 但是我又有一些average down成功的例子，然后我和大家一样，就把救援资金撤掉
了。结果发现其实很多情况下后面会有一个大rally，也就是说，第一次买的时机不是
很正确，但是方向是对的。所以我很疑惑，average down成功后是不是要average up?
看来大家的回答是先保本。但是我原先的position就不是很大，我想慢慢加码的。所以
说很多情况下average down，出水后,average up反而是个好trade
真是青蛙啊 |
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k********n
发帖数: 18523 | 7 http://www.davemanuel.com/2009/08/12/the-worst-month-historical
Worst Average Returns Are Seen in September
inShare0
Take 100 people and ask them this question:
"Historically speaking, in which month does the stock market perform the
worst, on average?"
Of these 100 people, I'm guessing that at least half would say October.
The reason is simple - "Black Monday".
"Black Monday" took place on October 19th, 1987. This is the day when
markets around the world plunged lower.
The Dow Jones Industria... 阅读全帖 |
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L*********4
发帖数: 883 | 8 另外像GA，average Trump +4, 实际Trump +6，这也还好。
NV, average Clinton +1,实际Clinton +2。
CO, average Clinton +4，实际Clinton +5。
NM，average Clinton +5.8,实际Clinton +8.3,勉强。主要是最后投Johnson的少了很
多。
TX, average Trump +8.5, 实际Trump +9.
VA, average Clinton +5.5,实际Clinton +5.
另外一个不准的是NH, average Clinton +3.6,实际Clinton +0.2.
这是所有的除midwest之外结果在10%之内的了，可见大部分还可以。 |
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m**1
发帖数: 888 | 9 我用的是etrade帐户，看chart时，一直找不到50moving average和200 moving
average，但是看到了simple moving average, exponential moving average 和
weighted moving average. 请问这些与50 和 200有什么区别？谢谢！ |
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m****r
发帖数: 5435 | 10 请问如何有效地average down？比如啥时候应该average down，啥时候不应该average
down，average down的资金与原投入资金比例如何，应该average down几次，啥时候停
止average down。。。
谢谢。 |
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l****z
发帖数: 29846 | 11 By Staff, Associated Press
January 17, 2012
DETROIT (AP) — Americans are holding onto cars and trucks longer, pushing
the average age of a vehicle to a record 10.8 years.
The Polk research firm said Tuesday that the average age of a car last July
was 11.1 years, while the truck average was 10.4.
Unemployment and the sour economy have caused people to put off buying cars
and trucks.
Polk says the average vehicle age has been rising since 2008. But the firm
says a sales rebound last year is likely... 阅读全帖 |
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l******u
发帖数: 2401 | 12 这个是从维基百科上面引用的：
“Time in file (Credit File Age) (15% contribution on the FICO scale) - The
older your credit report the more stable it is, in general. As such, your
score should benefit from an old credit report. This "age" is determined two
ways; the age of your credit file and the average age of the accounts on
your credit file. The age of your credit file is determined by the oldest
account's "date opened", which sets the age of the credit file. The average
age is set by averaging the age of e... 阅读全帖 |
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g****t
发帖数: 31659 | 13 我还是两点浅见：
(1)投资合同没看到之前，慎谈估值，慎谈买卖
(2)技术上在目前阶段，大家闲聊下挺好的
https://techcrunch.com/2016/07/15/pokemon-gos-retention-rates-average-
revenue-per-user-are-double-the-industry-average/
New data released this morning on the mobile phenomenon Pokémon Go shows
that the popular game isn’t only the biggest in U.S. history – it’s also
breaking records when it comes to its ability to monetize and retain its
users, as well. According to a report from SurveyMonkey, Pokémon Go is
seeing retention rates at more than ... 阅读全帖 |
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w*********y
发帖数: 7895 | 14 【 以下文字转载自 Statistics 讨论区 】
发信人: westjourney (胖得走不动), 信区: Statistics
标 题: 问一个统计算average from ranges
发信站: BBS 未名空间站 (Thu Mar 5 20:42:19 2015, 美东)
假设我有一些数据，
A= 1-10， B = 11-20, C = 21-30, D = 31-40
ID Cost
1 A
2 D
3 C
4 C
5 D
......
要求算average cost...
现在有2个做法，一种做法是把A, B, C, D 分别CODE 1， 2， 3， 4，然后加起来，算
average, 如果是 2.5, 我就说average cost 是11-30.
还有一个做法是，把所以lower bounds and higher bounds分别加起来，
再算average cost的range...
我google了一下，没有找到很多信息。。。所以想请教一下大家，这2个方法的利弊，
或者还有什么更好的方法吗？ |
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w*********y
发帖数: 7895 | 15 【 以下文字转载自 Statistics 讨论区 】
发信人: westjourney (胖得走不动), 信区: Statistics
标 题: 问一个统计算average from ranges
发信站: BBS 未名空间站 (Thu Mar 5 20:42:19 2015, 美东)
假设我有一些数据，
A= 1-10， B = 11-20, C = 21-30, D = 31-40
ID Cost
1 A
2 D
3 C
4 C
5 D
......
要求算average cost...
现在有2个做法，一种做法是把A, B, C, D 分别CODE 1， 2， 3， 4，然后加起来，算
average, 如果是 2.5, 我就说average cost 是11-30.
还有一个做法是，把所以lower bounds and higher bounds分别加起来，
再算average cost的range...
我google了一下，没有找到很多信息。。。所以想请教一下大家，这2个方法的利弊，
或者还有什么更好的方法吗？ |
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t**x
发帖数: 20965 | 16 咱家三辆，平均10.6岁。够ws吗？
http://money.cnn.com/2013/08/06/autos/age-of-cars/index.html?ii
The average age of vehicles on America's roads has reached an all-time high
of 11.4 years, according to the market research firm Polk. And that average
age is sure to keep climbing, the firm said.
The decline in new vehicle sales during the recession pushed the average
vehicle age higher, as people kept their old cars running longer, according
to Polk. The number of vehicles over a dozen years old is growing espec... 阅读全帖 |
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T*****E
发帖数: 1432 | 17 我昨天就在想这个问题，问一下大家怎么想：
1）股价回到averaged cost，什么也不做，happy请继续，即使到averaged前的价格也
不再加了
2）股价回到averaged cost上后加码，不加白不加
3）股价回到第一次买入价（average前的价格）后才加码，之前不加
大家是怎么做的啊？
虚心求教 |
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r*****e
发帖数: 4611 | 18 建议你在确认底部之后再做第一次average down
average down是在你经验非常丰富，判断十有七八中的时候处理一些判断错误的情形的。
如果你根本就没有本事在大多数操作的时候是正确的，average down很可能是个死亡陷阱
建议最多只做一次average down，如果又错了就捂着或者割肉出来，很多人平时trade
很行，就因为要救一个position最后把整个账户都赔进去了 |
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t********2
发帖数: 638 | 19 average down是死的最惨的，尤其这种将要crash的市场。
要么设止损点割肉，要么死捂着算了。
average losers average是从1930年股灾中得出的最著名的一条经验。 |
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r***k
发帖数: 13586 | 20 不是不要average down，而是不要太快average down。如果你可以average down 10次
，那么dow指每跌500点average down一次应该是比较稳妥的。 |
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o******r
发帖数: 259 | 21 好贴，忍不住冒泡一下
我觉得1）2）就够了
3）以后假定你知道7块是合理价位，其实这是一个很大的假定，除非你有很多信息量，
否则这个是没有道理的。
Averaging本身就是因为很多不确定，所以才多次averaging.
3）以后在我看来是和averaging背道而驰的，或者说是画蛇添足。
你都假定合理价位是7了，还averaging什么呢 |
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j***z
发帖数: 74 | 22 http://finance.yahoo.com/news/Average-rate-on-30year-apf-219376
NEW YORK (AP) -- The average rate on the 30-year fixed mortgage dropped this
week, following lower yields on Treasury bonds.
Freddie Mac says the average rate on the 30-year loan slipped to 4.87
percent from 4.95 percent. It hit a 40-year low of 4.17 percent in November.
The average rate on the 15-year fixed home loan fell to 4.15 percent from 4.
22 percent. It reached 3.57 percent in November, the lowest level on records
dating bac... 阅读全帖 |
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n**m
发帖数: 156 | 23 一个多项survey选择题， A. B. C 选项。
survey对象有100个，每一次都有人没有交答案上来上来。
重复进行3次。
现在我有答案
round a b c missing
1 30 30 30 10
2 20 40 20 20
3 10 50 30 10
求percentage的时候，missing value要被去掉
所以我应该 得33% 33% 33%
25% 50% 25%
11% 55% 33%
然后最后得 average percentage 23% 46% 30%
这个step理论上有没有什么问题？
另外一种方式是先average三次的count得
20 40 27 average total是 87
然后的average percentage 是20/87 40/87 27/87
我觉得前一种才是正确的app... 阅读全帖 |
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j*******g
发帖数: 331 | 24 【 以下文字转载自 DataSciences 讨论区 】
发信人: jasonmeng (夜旅人), 信区: DataSciences
标 题: only average statistics
发信站: BBS 未名空间站 (Tue May 20 11:34:25 2014, 美东)
This is not my task. This is a task of my colleague and I don't like the way
he did it. I am interested in how to analysis this. We have very detailed
data and we want to find some correlation with another source of data. On
the other source, they only have average statistics, for example, average
price of a product by each district. We have the detailed... 阅读全帖 |
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w*********y
发帖数: 7895 | 25 假设我有一些数据，
A= 1-10， B = 11-20, C = 21-30, D = 31-40
ID Cost
1 A
2 D
3 C
4 C
5 D
......
要求算average cost...
现在有2个做法，一种做法是把A, B, C, D 分别CODE 1， 2， 3， 4，然后加起来，算
average, 如果是 2.5, 我就说average cost 是11-30.
还有一个做法是，把所以lower bounds and higher bounds分别加起来，
再算average cost的range...
我google了一下，没有找到很多信息。。。所以想请教一下大家，这2个方法的利弊，
或者还有什么更好的方法吗？ |
|
c***c
发帖数: 21374 | 26 http://www.pbs.org/newshour/updates/calculator-compare-taxes-mi
The average single American is forking over about 25 percent of their
paycheck for income tax and social safety taxes — which in the U.S. include
programs like Social Security and unemployment insurance. But when compared
to other high-income nations, Americans typically are taxed on the lower
end of the scale: the U.S. ranks No. 25 out of the 34 developed nations
according to new data released Friday. The U.S. average is a few poin... 阅读全帖 |
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n******e
发帖数: 2547 | 27 首先關掉的卡依然是分母，這一點我們基本能達成共識。
那麼想確認關掉的卡算不算 average credit history 的分子就很簡單了。
看一下你 credit krama 上的 average history ＝y,
總信用卡數 ＝ active 的信用卡數量 ＋ 已經關掉的信用卡數量 ＝ n，
你只需要算一下現在所有 active 的信用卡使用時間加起來是不是等於 ny 就行了。
我的計算結果是比 ny 要少 30 多個月，
這基本就是我第一張第二張信用卡的使用時長。（當年年少無知，最初的兩張信用卡在
用了一年多以後全部 cancel…. 掩面）。
所以結論是，在 average credit history 裡面，關掉的信用卡既算分子，又算分母。
不放心的話自己算一下好了。
而且在 Citi identity monitor 的 credit report 上面，你是能看到已經關掉的卡
的使用歷史的，並沒有消失 |
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n*********e
发帖数: 665 | 28 说的好，我的一个账户就是不断的因为不断average down死掉的，前年到去年我
average down YGE 从24到3，最后终于心理承受不住，割肉出场，少average down几次
，压力会小很多，结果可能就不一样了
的。
陷阱
trade |
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c********t
发帖数: 4527 | 29 again, depends on your trading time frame and how you pick up the stock (how
conviction you are).
If it is long term, conviction, you will be very happy to see price driving
down, and of course, always average down.
However, there conservative strategy that always entering position slowly (
portion by portion) so there is no notion of average up or average down,
only build up. And core position and swing position difference |
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G*******m
发帖数: 16326 | 30 总共$2,200，分4次购买，股价变化如下，
March 15，$3
April 15, $5
May 15, $10
June 15, $4
我们可以有三种方法：
1）Dollar cost averaging
每次$550，购得486股（183+110+55+138），成本=$4.53
2）Share averaging
每次100股，购得400股，成本=$5.50
3）Conditional Dollar averaging （Delay if price too high)
设$7，为price too high
每次$550，购得569股，成本=$3.87
3-1）March：183股 ($550)
3-2）April：110股 ($550)
3-3）May：Skip due to high price
3-4）June：275股 ($550+$550) |
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Q*****T
发帖数: 558 | 31 有些人买股票吧，买了，不止损，跌了10%还多，然后继续买average down。继续跌继
续买。最后要割肉平仓。为什么不能在跌了5%，10%，并且看不到止跌企稳迹象的的时
候，先出市，等到底了有明确扭转迹象的时候再入呢？换句话说，cash有机会成本，与
其套牢在一个loser上，出来换个winner继续赚钱，哪怕现金放着也比亏钱强不是嘛？
当然有人可以argue说，我买啥都跌，换不换都一样。orz。。。。。。。。。另外，我
觉得除非在强支撑上反弹回温，或者贞德是对股票信心很足，一而再再而三得average
down不是个好办法。。。。很多人认可的那本书，亚当原理，我看了，收获最大的一个
理念是：不要怕止损出市，你现在小亏一点平仓，是避免了以后更大的损失。书里也说
，永远不要在loser上加仓，这个我持基本赞同态度，不过实际操作上会看情况。
有没有人，惯例使用average down的方法，经常可以赚钱结束一笔交易的？赖分享一下
你的原则吧！ |
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d*******o
发帖数: 952 | 32 隐约感觉dollar average应该跟这个etf的波动或者volume有关系？
请教一下，如果要dollar average这两个FXI和ASHR，哪个是更好的选择？为什么？
fxi的average volume大概是ashr的十几倍 |
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p**e
发帖数: 533 | 33 我的这个领域引用普遍偏低，大范围内属于engineering。我一共9篇文章，5篇2010年
后的，其余4篇分别是2003， 2004， 2007， 2007。引用都是来自这4篇，一共大概30
个他引。
我在本版看到sunshadow分享的average citation rates 2001－2011 （http://csr.spbu.ru/wp-content/uploads/2011/11/Average-Citation-)。 非常感谢 sunshadow 影子。 对于"engineering" field, 2003年是7.83，2004年是7.57, 2007年是4.87, 2011年是0.14。 All years是4.89.
像我这样的弱case能不能用这个average citation rates 做比较呢？我很是犹豫。
如何比较的话，应该怎么样才能显出我的outstanding？
万分感谢！ |
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j*******6
发帖数: 106 | 34 请教下average citation rates是怎么算的呢？
比如2007年发了两篇文章，到现在这两篇文章总的citation number是120，那2007年的
average citation rates 是60吗？
citation percentile也是基于average citation rates的基础上吗？
多谢! |
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a**l
发帖数: 219 | 35 真心不知道这average是怎么算出来的，NSC average 5 month， TSC average 4 month
，到national了就9.8 month了，这是逼着pp的节奏么... |
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G****a
发帖数: 10208 | 36 http://www.simplyhired.com/a/salary/search/q-immigration%20atto
Average Immigration Attorney Salaries
In USD as of Jul 12, 2013
immigration attorney, $62,000
The average salary for immigration attorney jobs is $62,000. Average
immigration attorney salaries can vary greatly due to company, location,
industry, experience and benefits.
like
the |
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r*******t
发帖数: 8550 | 37 "both JPMorgan Chase (JPM) and Goldman Sachs (GS) are on track to pay their
average worker $500,000 or more"
Please notice it is for "AVERAGE WORKER", not for "executives", which make
much more than the average. |
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c*********i
发帖数: 570 | 38 Bay Area's average homebuyers shut out by cash offers, investors
By Pete Carey
p****[email protected]
Posted: 04/03/2013 10:51:33 AM PDT
Updated: 04/03/2013 10:51:43 AM PDT
Click photo to enlarge
Realtor Sharmila Banerjee shows her clients, Waruna and Inoka Fernando with.
.. ( Karl Mondon )
As the Bay Area's prime homebuying season begins, a witches' brew of market
forces is making this spring one of the toughest times in memory to purchase
a home.
Arrayed against average buyers are fiercely... 阅读全帖 |
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B*****R
发帖数: 1539 | 39 猴子工资第3了！！
Baseball's Average Salary Drops to $2.49M
2 hours, 11 minutes ago
Add Top Stories - AP to My Yahoo!
By RONALD BLUM, AP Sports Writer
NEW YORK - Just a few days into the season, baseball already has produced a
startling statistic: The average salary dropped for the first time in nearly a
decade.
Not that major leaguers will be sweating to make their mortgage payments.
Despite the 3 percent drop from the start of last season, players on opening
day rosters averaged $2.49 million, accordi |
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m*****1
发帖数: 2546 | 40 seevral days ago, saw a post, talking about Canadian household average
income, more than CA$90,000.
so, it is not that wrong for US to have 110K average.
average, i |
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b*****2
发帖数: 11103 | 41 【 以下文字转载自 USANews 讨论区 】
发信人: gemini2012 (双子AB), 信区: USANews
标 题: 来来来，看看2016 Average woman都啥样（多图）
发信站: BBS 未名空间站 (Tue Oct 25 22:03:35 2016, 美东)
A recent study revealed that the average American woman wears a size 16–18,
and we want to celebrate that!
So, we asked size 16–18 women in the BuzzFeed Community to send in their
favorite pictures of themselves, and honestly, we couldn’t even handle all
the slayage.
http://www.buzzfeed.com/chrissymahlmeister/anything-but-average?bffbhealth&utm_term=.apK... 阅读全帖 |
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d****y
发帖数: 2180 | 42 ☆─────────────────────────────────────☆
benpu (随性而安-Think or Sink) 于 (Wed Nov 14 22:58:42 2012, 美东) 提到:
个人体会，觉得整理一下给正在match的同行们做个参考。这里说的是CMG的总体情况，
不适于一些突出人才。
关于现在CMG在美match的形势，个人认为很严峻，而且在短期内无法缓解，甚至很可能
进一步恶化。从三个阶段分析:
1. match前的竞争情况：
a.AMG(MD/DO)扩招是不争的事实，具体增长在20%左右
b.加勒比医学院扩招。他们的毕业生在竞争力上仅次于AMG,在IMG名列前茅
c.在IMG中，从个人经验中，CMG的总体竞争力低于印巴，中东，应该属于中下。
d.CMG中，老毕业生占很大比例，英语和文化交流方面相比较差
e.由于目前CMG在美国医生中占少数，而且高职位的相对较少，相比印度等IMG缺少群体
优势
2. match后的情况
a. Medicare funding cut 将会造成residency slot cut. 在其他resident/fel... 阅读全帖 |
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j*******g
发帖数: 331 | 43 This is not my task. This is a task of my colleague and I don't like the way
he did it. I am interested in how to analysis this. We have very detailed
data and we want to find some correlation with another source of data. On
the other source, they only have average statistics, for example, average
price of a product by each district. We have the detailed price for each
store, but no district information. How can I find the correlation? Can I
fit the distribution with weighted average and then co... 阅读全帖 |
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w*******g
发帖数: 9932 | 44 not sure how the average is calculated.
Just FICA tax alone, you shell out ~ 11% of your income.
If you live in any state with state income tax, say 5%, that is 15% already.
Federal tax rate is more than 10% on average for sure.
include
compared |
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F*V
发帖数: 3978 | 46 Race differences in average IQ are largely genetic
Published on April 26, 2005 at 5:29 PM · 122 Comments
inShare.2A 60-page review of the scientific evidence, some based on state-
of-the-art magnetic resonance imaging (MRI) of brain size, has concluded
that race differences in average IQ are largely genetic.
The lead article in the June 2005 issue of Psychology, Public Policy and Law
, a journal of the American Psychological Association, examined 10
categories of research evidence from around th... 阅读全帖 |
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m******O
发帖数: 596 | 47 你不要看绝对数,要看捐赠占总收入的百分比.
“about 0.3% of their income”
而他狂批的富人呢？ -
"Another study of wealthy households in 2005 found average yearly donations
of $40,746 from people with incomes from $200,000 per year to $500,000 per
year"
可见这top 2%的是很慷慨大方的。
“Nationally, more than two-thirds of U.S. households reported giving to
charity in 2004, with average contributions of $2,047 that year”
美国人民总体而言是乐善好施的，象Biden那样的，是1% |
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L*********4
发帖数: 883 | 49 对刚才说不准的时候忘了NC。NC也是离谱了。
OH不准，OH的poll里面只有两个是Trump +6, +7.剩下的都是什么+1,+2.只有这两个可
以算准。
AZ，FL是准的。AZ的538 final average是Trump +2,实际Trump +3.5，individual
poll里面有Trump +5的好几个。
FL的final average是Hillary +0.5,实际Trump +1，individual poll里面有Clinton +
2, +1, trump +4，+3.这不能算不准，可以算是在误差范围之内。 |
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p*******k
发帖数: 20 | 50 The strategy of "averaging down", as the term implies, involves investing
additional amounts in a financial instrument or asset if it declines
significantly in price after the original investment is made. It's true that
this action brings down the average cost of the instrument or asset, but
will it lead to great returns or just to a larger share of a losing
investment? Read on to find out.
Conflicting Opinions
There is radical difference of opinion among investors and traders about the
viabilit |
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