x*d 发帖数: 13 | 1 2016 Honda Odyssey 的windshield被石子砸裂了。
因为有lane deviation warning, 所以找dealer 估了价。换OEM玻璃要一千出头。AAA
保险拒付说太贵。
AAA 自己的只要几百。
请问用AAA的修, 对 Lane Deviation Warning 有影响吗?
有人有建议吗?
谢谢 |
|
M*P 发帖数: 6456 | 2 刚才在编程,我想的是: I will try a “logistic regression” (on this data)
, and I will compare this with a “spline” fit, and I will make a figure
with both fitted curves. I need to calculated the “mean” and “standard
deviation” of the parameter A and compare.
我没有想 “我要做一个逻辑回归,再做一个样条回归,然后我要做一个图,里面有这
两个曲线。我要求参数A的平均值和标准差然后做比较” 这几个词我都是google的,
而且离开本科那么多年了,当年学的时候就不怎么扎实,最后到美国重学一遍英文,就
不记得中文怎么说了。比如方差和标准差,不仔细想我就不知道那个是standard
deviation。
难道你们干活的时候都是用中文想? 我觉得其实大多数时候都是用英文想,只是你不
觉得而已。
When I write and read papers or r... 阅读全帖 |
|
l*****g 发帖数: 996 | 3 Standard deviation做么用啊,难道还要跟以往的课比一下。
: 不能只看均值吧,还得看standard deviation
|
|
发帖数: 1 | 4 十一、我是歌手
在悉尼呆了不到两周,再次飞美国,这次去佐治亚的一个R1。这是一次毕生罕见的面试
、奇遇。面试从第一分钟开始就发生了我意想不到的变化,过程出乎意料。 面试前的
准备不说了,直接跳到面试开始的一刻。我和SCC次早饭,SCC是一个白人老头,小胡子
留着非常帅气。我们边吃边聊,他有一搭没一搭的说着,不热情也不冷淡,也就是很职
业化。他问我,你做的科研和音乐相关,你是musician 吗?我说不算吧,但是我爱听
歌唱歌。他问,你有最爱的歌吗?我其实喜欢的歌挺多的,我想既然来了佐治亚,就说
一首佐治亚的歌吧。我说我最爱Georgia on my mind,这是一首黑人歌,也是佐治亚的
州歌。这时我意想不到的事情发生了,我突然看到他的眼睛里放出了光芒,笑从两颊生
。我忘不了他的脸色从那一秒开始的秒变。
他说你说说这首歌。我长叹一口气,想到:这歌我听了20多年了,唱了20多年了,你问
我这个真是问对人了。我吧这首歌主要的singer说了一遍,比较了各种唱法的特点,从
Willie Nelson,Annie Lennox,到Micheal Bolton,把我20年的心得说了出来,那真
是... 阅读全帖 |
|
y**o 发帖数: 69 | 5 者: mollusk
on Tue, 7 Dec 1999, at 12:17 p.m.
对我来说:GRE曾经是个NIGHTMARE,99/4的LOGIC使我一败涂地。 由于
相信自己的实力,不甘心失败的我从9月底开始重新复习GRE, 经过2个多月的艰
苦奋斗,今天再考了一回,终于如愿以偿,获得了 满意的成绩2320
我很幸运,在今天的机考遇上了两个SECTION的MATH。数学再难,也难不
倒中国学生。我确实碰到了多道STANDARD Deviation,Probability的 题目,有一
道题目看是方差STANDARD Deviation与Range of Numbers 的比较, 还有一道与钱
永强提到的一道题相似,是这样的:Two Dice,6 faces each represent one Number,
when thrown twice,how many diffe |
|
K****D 发帖数: 30533 | 6 这个数学问题太复杂了,非本人能够抵挡,无法证明为何SD和年份的平方根
成反比。
只好作了一个蒙特卡洛模拟,假设annual return 为正态分布。
如果取expected annual return == 14.10%
SD on annual return == 16.70%.
Years == 30年。
做了100000次随机模拟。结果见图(值是目测的,不一定精确):
expected compound annual return == 12.85%
Standard deviation on compound annual return == 3.08%
图形不完全像是一个正态分布。
Ringer的表格里的Standard deviation on compound annual return得以验证,
expected compound annual return 不知为何模拟出来的值小于14.1%。 |
|
T*********e 发帖数: 9208 | 7 DCA的计算方法不一样, 他总的return 可能只有60%, 但是等价的3年rate可能有就又30%
另外他选的股票也比较risky
VCVLX
Beta 1.41
R2 0.91
Standard Deviation 32.53
VISGX
Beta 1.23
R2 0.89
Standard Deviation 28.64
都是直上直下型的small/middle cap
warren估计比较保守一些,长期我还是看好warren的投资策略
almost
warren |
|
|
d********f 发帖数: 8289 | 9 Lord Abbett High Yield Fund Class A LHYAX -- 0.36
standard deviation does not exist
S&P 500 P IX -- 0.83
standard deviation 10.06
哪位大牛给解释一下为啥一个bond fund的sharpe ratio如此高?是risk很高吗?还是
我理解错了。
谢谢 |
|
n*****a 发帖数: 55 | 10 是这题吗?
A new 101-floor hotel want to construct the most futuristic, efficient
building in the world.
Specifically, you've been tasked with writing a simulation that takes as
input a file in this format:
time,start_floor,dest_floor
0,1,4
0,0,43
1,43,100
…
Each input line represents a guest pushing the button to request an elevator
at a specific time. start_floor is the floor (0-100) from which they are
requesting an elevator and dest_floor is the destination floor (0-100) they
want to go. This bei... 阅读全帖 |
|
a*********a 发帖数: 3656 | 11 let s make an attemp to quantify.
1. go to a start up, 5 year horizon. roughly say you have 90% prob to make
only the salary (say 100k) then loose your job and this could happen anytime
during that 5 years, so add another 10% discount to that. maybe 9% prob to
make 1M, 0.9% prob to make 10M, 0.1% prob to make 100M. but those high
payouts are likely to be in restricted company shares so I d put a 10%
discount on them.
so we have 0.9*100k*0.9*5+0.09*1000k*0.9+0.009*10000k*0.9+0.001*100000k*0.9
=40... 阅读全帖 |
|
a*********a 发帖数: 3656 | 12 let s make an attemp to quantify.
1. go to a start up, 5 year horizon. roughly say you have 90% prob to make
only the salary (say 100k) then loose your job and this could happen anytime
during that 5 years, so add another 10% discount to that. maybe 9% prob to
make 1M, 0.9% prob to make 10M, 0.1% prob to make 100M. but those high
payouts are likely to be in restricted company shares so I d put a 10%
discount on them.
so we have 0.9*100k*0.9*5+0.09*1000k*0.9+0.009*10000k*0.9+0.001*100000k*0.9
=40... 阅读全帖 |
|
z*****4 发帖数: 271 | 13 重复丢骰子,直到点数之和大于等于某个数M。
Q1: M=10000,点数之和减去M的平均值是多少(也就是期望)?
Q2: M=10000,点数之和减掉M的标准差是多少?
Q3: M=10000,投掷骰子的平均次数是多少?
Q4: M=10000,投掷骰子次数的标准差是多少?
You roll a fair 6-sided dice iteratively until the sum of the dice rolls is
greater than or equal to M.
Q1. What is the mean of the sum minus M when M=10000
Q2. What is the standard deviation of the sum minus M when M=10000
Q3.What is the mean of the number of rolls when M=10000
Q4. What is the standard deviation of the number of rolls when M=10000 |
|
m***i 发帖数: 141 | 14 很多印度学生都不知道opt告急这件事。以下是我总结的适合给印度人和其他国际学生
看的帖子。请转发给你周围的international student!通过邮件,Facebook,任何形
式都行!这件事请需要各国学生联合起来!
International students: OPT extension may be CANCELED! Please stand up and
fight for your rights NOW!
Department of homeland security is asking for public comments on internet
regarding the new rule about 24-month OPT extension, but there are too many
US WORKERS OPPOSING to this rule! They leave huge amount of negative
comments and even ask government to CANCEL OPT extension! Unfortun... 阅读全帖 |
|
g*****j 发帖数: 1211 | 15 The T value is the standard deviation of bone density from healthy
people. A T value of -1.5 is 1.5 standard deviation below healthy bone
density for your age, which means your bone density is about the lowest
10% in your age group.
You don't need biphosphonate treatment at this point, but it is
necessary to be vigilant about your vitamin D & Ca intake. Your doctor
may rule out other endocrine problems that contributes to your Ca loss.
Sensible sun exposure is helpful, and most vitamin D pro |
|
l*h 发帖数: 4124 | 16 it is usually the other way round: chronic rhinitis causes turbinate
hypertrophy. he needs to see an ENT surgeon to see whether rhinitis would
respond to drug therapy; if not, and if turbinate hypertrophy is severe to
interfere with breathing, surgery is recommended. the surgeon should also
check whether he has septal deviation that needs correction. most people (~
80%) have some deviation but in some (~20%) may become severe enough
requiring treatment at some point of their life. |
|
|
r******n 发帖数: 2730 | 18 写在最前面:
Mentesorri是各种teaching curriculum的一种,水果有香蕉苹果橘子,选择哪个看你
的喜好,香蕉苹果橘子们都有相同相似的营养元素,也有各自特殊的口味和营养。选择
吃香蕉和没错,只是要知道香蕉缺啥,做到心里有数。再次声明,我的初衷不是要把
mentesorri搞臭,我从一开始就一直说,正宗的mentesorri有正面效果。我从来就没有
说过mentsorri是不好的。只是有不少家长说实地参观了正宗的蒙校自己不喜欢,和自
己的教育观格格不入而已。为什么我一直说正宗呢?蒙校自己的官方组织就一直声明,
没有通过他们的认证考核的就不算是蒙校。因为curriculum是个整体。东拉西凑出一个
没有consistent理论指导的东西,蒙校组织也怕会给孩子有不好影响,把自己给抹黑了
。所以以下对于mentesori的研究全部是正宗蒙校的研究样本。
蒙校在美国过去和现在:20世纪初传入美国,1910-1920年那个阶段大红大紫。由于和
主流教育观有差距,逐渐衰落,现在全美只有4000-5000所有资格认证的蒙校,教育阶
段从婴儿期一直到8年级。
与某些家长认为的蒙校是... 阅读全帖 |
|
b*********n 发帖数: 2975 | 19 //ding
有人的心眼和针尖一眼小,一点不一样的意见都容不下,呵呵
写在最前面:
Mentesorri是各种teaching curriculum的一种,水果有香蕉苹果橘子,选择哪个看你
的喜好,香蕉苹果橘子们都有相同相似的营养元素,也有各自特殊的口味和营养。选择
吃香蕉和没错,只是要知道香蕉缺啥,做到心里有数。再次声明,我的初衷不是要把
mentesorri搞臭,我从一开始就一直说,正宗的mentesorri有正面效果。我从来就没有
说过mentsorri是不好的。只是有不少家长说实地参观了正宗的蒙校自己不喜欢,和自
己的教育观格格不入而已。为什么我一直说正宗呢?蒙校自己的官方组织就一直声明,
没有通过他们的认证考核的就不算是蒙校。因为curriculum是个整体。东拉西凑出一个
没有consistent理论指导的东西,蒙校组织也怕会给孩子有不好影响,把自己给抹黑了
。所以以下对于mentesori的研究全部是正宗蒙校的研究样本。
蒙校在美国过去和现在:20世纪初传入美国,1910-1920年那个阶段大红大紫。由于和
主流教育观有差距,逐渐衰落,现在全美只有4000-5000所有... 阅读全帖 |
|
|
d***a 发帖数: 13752 | 21 你还是直接看他的原话吧。有点长。前面去掉了背景。
http://www.mitbbs.com/article_t1/Parenting/31865417_0_1.html
-------------
蒙校在美国过去和现在:20世纪初传入美国,1910-1920年那个阶段大红大紫。
由于和主流教育观有差距,逐渐衰落,现在全美只有4000-5000所有资格认证的蒙校,
教育阶段从婴儿期一直到8年级。
与某些家长认为的蒙校是很宽泛的组织。有很多变体。这个想法是错的,相反,
Mentesorri是个很严密的组织,老师和学校要结果蒙校组织的教育,资格审查整
个流程以后才能被称为蒙校老师。所以正宗的蒙校之间很相似,蒙校之间差距不大,很
标准。这点可以认为是个优点,比普通的preschool要好。普通preschool,学校之间的
差距有时会很大,NAEYC只是一个指导性的组织,也不强制所有preschool都要经过
NAEYC的认证和教育,老师只要有教室资格证一样的认证就可以了。但是你在加州上的
蒙校,你去纽约上的蒙校,硬件上教学方法上都差不多。大致可以认为是,连锁机构了。
关于mentesorr... 阅读全帖 |
|
r******n 发帖数: 2730 | 22 当年发出来十分有争议,如今发出来再给考虑上蒙校的家长提个醒。不过很好,发现可
能是80后的家长多起来了,都不那么盲目的推崇蒙校了。建议家长多看多思考,
preschool 的主要目的是 school readiness,不是早期智力开发。
Mentesorri是各种teaching curriculum的一种,水果有香蕉苹果橘子,选择哪个看你
的喜好,香蕉苹果橘子们都有相同相似的营养元素,也有各自特殊的口味和营养。选择
吃香蕉和没错,只是要知道香蕉缺啥,做到心里有数。再次声明,我的初衷不是要把
mentesorri搞臭,我从一开始就一直说,正宗的mentesorri有正面效果。我从来就没有
说过mentsorri是不好的。只是有不少家长说实地参观了正宗的蒙校自己不喜欢,和自
己的教育观格格不入而已。为什么我一直说正宗呢?蒙校自己的官方组织就一直声明,
没有通过他们的认证考核的就不算是蒙校。因为curriculum是个整体。东拉西凑出一个
没有consistent理论指导的东西,蒙校组织也怕会给孩子有不好影响,把自己给抹黑了
。所以以下对于mentesori的研究全部是正宗蒙校的研究样本... 阅读全帖 |
|
u*****a 发帖数: 6276 | 23 你说的是下面这个:
Assessment Measure
Wechsler Intelligence Scale for Children ━ Fourth Edition (WISC-IV). This
is an individually administered, comprehensive clinical instrument for
assessing the intelligence of children ages 6:0 through 16:11. It provides
composite scores that represent intellectual functioning in specified
cognitive areas (verbal comprehension (VCI), perceptual reasoning (PRI),
working memory (WMI), and processing speed (PSI)) as well as providing a
composite score that represents ... 阅读全帖 |
|
a*****g 发帖数: 19398 | 24 By Jay P. Greene
My advice for scholars wishing to contribute to public discourse during this
election season is simple: Just tell the truth. One might think it
unnecessary to urge scholars to be honest, but it is shocking how easily
education researchers are tempted to deviate from the truth in the hope of
gaining influence, affecting outcomes, and obtaining greater status. The
hard reality is that scholars always have limited influence, cannot easily
anticipate or control outcomes, and are for... 阅读全帖 |
|
B**********r 发帖数: 7517 | 25 Just calculate the average return and the standard deviation of that return,
compared to some risk-free asset. Then take the ratio of the average and
standard deviation. |
|
a*****1 发帖数: 3134 | 26 5%-15% 的调整会有,但不会崩盘。
2000年时人人操股,个个发财,群情振愤。现在一般人都不操股,被07年搞怕了,还没
缓过来。
股坛上看牛看胸一半多。
如果你觉得死皮1800合理,那两年前1200就是deviation.为什么现在不能deviate到
2400?
一般的剧本是现在看胸看牛的,在不在里面的,都不太敢入。要到2300点觉得看清形势
都入了,就要崩了。 |
|
d********f 发帖数: 8289 | 27 【 以下文字转载自 Investment 讨论区 】
发信人: ddyourself (nah), 信区: Investment
标 题: 请问一下一个bond mutual fund为什么sharpe ratio这么低?
发信站: BBS 未名空间站 (Tue Jan 16 07:08:43 2018, 美东)
Lord Abbett High Yield Fund Class A LHYAX -- 0.36
standard deviation does not exist
S&P 500 P IX -- 0.83
standard deviation 10.06
哪位大牛给解释一下为啥一个bond fund的sharpe ratio如此高?是risk很高吗?还是
我理解错了。
谢谢 |
|
a**********y 发帖数: 930 | 28 这个人叫karen bruton,去参加seminar,被人忽悠去念了博士,估计那种水货,读了
一年半拿了博士。
然后牛逼用一万刀起步,几年就变成四千多万美元。
当然,后面故事很精彩,大家看看
牛人介绍:
Background
Attended a $22K Investools PhD course that took 1.5 years.
Traded stocks using technical analysis from 2002 to 2007 with $10K capital.
Start non-directional trading using options from 2007 with ~$100K capital,
and made 50%.
Friends put in money to start 2008 off with $700K.
Made $41M profits by 2011, fund size was ~$80M.
As of May 2012, was managing around ~$160M.
Basic Strategy
Thet... 阅读全帖 |
|
a**********y 发帖数: 930 | 29 这个人叫karen bruton,去参加seminar,被人忽悠去念了博士,估计那种水货,读了
一年半拿了博士。
然后牛逼用一万刀起步,几年就变成四千多万美元。
当然,后面故事很精彩,大家看看
牛人介绍:
Background
Attended a $22K Investools PhD course that took 1.5 years.
Traded stocks using technical analysis from 2002 to 2007 with $10K capital.
Start non-directional trading using options from 2007 with ~$100K capital,
and made 50%.
Friends put in money to start 2008 off with $700K.
Made $41M profits by 2011, fund size was ~$80M.
As of May 2012, was managing around ~$160M.
Basic Strategy
Thet... 阅读全帖 |
|
g*****n 发帖数: 357 | 30 median=4 month
standard deviation could be several months
you are within median+/-2*standard deviation. |
|
d*********3 发帖数: 277 | 31 基于本版注册的2012到现在一共236个样本。
Variable Dates_between_FP_and_AD
Sample size 236
Lowest value 5.0000
Highest value 143.0000
Arithmetic mean 41.6229
95% CI for the mean 38.1658 to 45.0799
Median 35.0000
95% CI for the median 30.0000 to 36.5397
Variance 726.6785
Standard deviation 26.9570
Relative standard deviation 0.6476 (64.76%)
Standard error of the mean 1.7547
Coefficient of Skewness 1.4944 (P<0.0001)
Coefficient of Kurtosis 2.0110 (P=0.0002)
D'Agostino-Pearson test
for Normal distribution reject No... 阅读全帖 |
|
d*********3 发帖数: 277 | 32 统计表明LIn and SRC ttest p value = 0.61, no significant difference
Variable Dates__between_FP_and_AD_LIN
Sample size 201
Lowest value 11.0000
Highest value 151.0000
Arithmetic mean 40.3085
95% CI for the mean 36.5369 to 44.0801
Median 33.0000
95% CI for the median 31.0000 to 35.0000
Variance 735.3244
Standard deviation 27.1169
Relative standard deviation 0.6727 (67.27%)
Standard error of the mean 1.9127
Coefficient of Skewness 1.9843 (P<0.0001)
Coefficient of Kurtosis 4.5839 (P<0.0001)
D'Agostino-... 阅读全帖 |
|
g*****n 发帖数: 357 | 33 Days between RD and 485 AD Day (2012-now)
NSC:
median=93 days
standard deviation=54 days
Range=27 to 402 days
TSC:
median=78 days
standard deviation=57 days
Range=23 to 446 days |
|
r*****y 发帖数: 3406 | 34 back le
nice yum cha, nice to see ifan and deviate mm again.
keep this yum cha as yearly thing, en
ps, deviate and I got really good bargain of some kitchen stuff at Harris
Scarfe at Dickson |
|
i**n 发帖数: 1481 | 35 在堪培拉就没有机会上进么?说个例子给大家:我一个以前的同事,香港移民,12岁随
父母来澳洲堪培拉,22岁ANU读IT毕业找到政府工作在helpdesk作graduate,做IT的都知
道作helpdesk是最没有前途的,所以一年helpdesk的graduate作完就马上跳到同一个政
府的JAVA方面的team,这个IT部门很大,有很大的项目开发JAVA,招了很多人,他就把握
机会进去了,项目多任务多机会多,他也很用心,学了很多东西,2年半的时间就拿到
了澳洲政府的Excutive Level 1,但是他没有就此罢休贪图EL1的长工10万年薪,拿到
EL1不到半年就跳到另外一家政府当合同工,2年后再次跳槽到50强的跨国IT公司作合同
工,时薪近$100/小时。他现在28岁,6年时间里从4万的graduate做到时薪$100,我老
人家也是望尘莫及,当然他是做的非常出色的。一般人作不到这么好,但是也不至于30
岁就开始为退休规划。
deviate的故事就等她自己来说吧,哈哈,也是很类似的。deviate, rabit请注意,他
在大学期间就有一个女朋友,拍拖至今,用情专一,请不要和我打听 |
|
r*****y 发帖数: 3406 | 36 我觉得澳洲首府城市市区的apartment还是很值得投资的,至少不会亏
投资中档的房子在澳洲还算是最保险的投资吧
我们差点搬了,LD申请一个香港的工作,就是我前两天发包子的那阵,结果黄了
55555555555555555555555555555
现在我就安心的等我房子盖好吧,唉
在 deviate (deviate) 的大作中提到: 】 |
|
r*****y 发帖数: 3406 | 37 不知道你也在这里,以为就deviate,ifan跟我在这。
我跟deviate经常聚。ifan老大比较忙,一年见一次似乎。
你奔一下,下次聚会就叫上你。 |
|
r*****y 发帖数: 3406 | 38 现在可以开始说说brokor了。一直以为brokor是很好做的一个工作,不就是帮人选择一
下贷款,然后申请么。不过显然这个世界上还是笨蛋比较多。先说一下我的特殊情况,
我是09年7月付定金买的期房,当时我符合政府2w1的奖励(这是我买房的主要原因)。
大家买过房子的都知道,FHOG是银行帮你办的,但是因为我的房子要盖17个月,而FHOG
要在买房1年内申请,所以我自己申请了FHOG,revenue office批准了,然后等我贷款
,settlement的时候(只要是不晚于2011年3月底),银行拿着我批准的条子就可以去
revenue office领钱了)
我的brokor是我从网上胡找的,那种中国小留。现在很多小留作brokor,大家要小心。
第一次电话似乎说的挺好,他帮我申请NAB的贷款。我当时告诉他我的情况是已经交了
大概7%的定金,然后有政府的2w1的奖励,这些就是房价的11%了。如果能贷款90%最好
,如果不行,我还有存款。多么简单easy的case呀!不过人家可理解不了。理解不了还
不跟你说。等我一周之后打电话问,他说90%属于高风险贷款,你就别想了,85%你都不
一定能... 阅读全帖 |
|
o********i 发帖数: 1 | 39 Just read something mentioned "standard deviation of estimation error"
While it seems strange,please check this:
(sum(Zi*-Zi)/sigmai)/m
Zi*: the estimated value, Zi: real value, sigmai: standard deviation of
estimation error of Zi. So sigmai will be equal to sqrt(Zi*-Zi) from the
definition, right or wrong? Really need some help about it.Thanks |
|
t******g 发帖数: 17520 | 40 http://www.spacew.com/pipermail/forum/2004-August/000675.html
It is a measure of how disturbed the Earth's magnetic field is. It varies in
value from 0 to about 400, in linear steps. It is computed from the actual
deviations (non-quiet-time deviations) measured at a number of geomagnetic
observatories (mostly mid-latitude ones) around the world. A value of 30
represents minor storm conditions. Values of 50 represent major storm
conditions and values greater than 100 represent severe storm condit... 阅读全帖 |
|
q***l 发帖数: 177 | 41 Health One Pharmaceuticals, Inc. of El Monte, CA was warned by the FDA that
a September/October inspection of the company's dietary supplement
manufacturing facility revealed serious violations of FDA's Current Good
Manufacturing Practice (CGMP) in Manufacturing, Packaging, Labeling, or
Holding Operations for Dietary Supplements regulation, including failure to
conduct at least one appropriate test or examination to verify the identity
of a component that is a dietary ingredient
WARNING LETTER
V... 阅读全帖 |
|
s*********i 发帖数: 916 | 42 话说我这个礼拜一知道这个礼拜五要考试
数学 IT和统计 我就知道我要崩溃了
我活了二十来年 学过最高深的数学就是大一的微积分 学过最高深的电脑就是计算机二级
这些学过的还基本都忘干净了
我以蜗牛的速度搞定了数学部分
剩下的统计和IT 我连人家给我的大纲还有生词不认识呢
干脆不知到要怎么学
谁来救救我 明天上午就考了
请各位大牛千万不吝赐教!
统计大纲
Interpreting Pie Charts and Bar Charts
Graphical Representations
Histograms-Understanding Shape, Center, Spread, Outliers
Stemplots
Measures of Center: mean, median and mode
Measures of Dispersion: range, inter-quartile range, standard deviation
The Standard Deviation Rule for Normal Data
Probability
IT 大纲 Excel 2007
Form |
|
b*********n 发帖数: 2975 | 43 FT
is it called IT and statistics?
话说我这个礼拜一知道这个礼拜五要考试
数学 IT和统计 我就知道我要崩溃了
我活了二十来年 学过最高深的数学就是大一的微积分 学过最高深的电脑就是计算机二级
这些学过的还基本都忘干净了
我以蜗牛的速度搞定了数学部分
剩下的统计和IT 我连人家给我的大纲还有生词不认识呢
干脆不知到要怎么学
谁来救救我 明天上午就考了
请各位大牛千万不吝赐教!
统计大纲
Interpreting Pie Charts and Bar Charts
Graphical Representations
Histograms-Understanding Shape, Center, Spread, Outliers
Stemplots
Measures of Center: mean, median and mode
Measures of Dispersion: range, inter-quartile range, standard deviation
The Standard Deviation Rule for Normal Da |
|
r****t 发帖数: 10904 | 44 【 以下文字转载自 Parenting 讨论区 】
发信人: Beida101 (北大学子), 信区: Parenting
标 题: BSO :十岁半男孩智商 160(>99.9%)
发信站: BBS 未名空间站 (Mon Sep 13 17:23:55 2010, 美东)
BSO :十岁半男孩智商 160 (>99.9%)
最近扁豆因故要参加一个儿童特殊教育的辅导课程。其申请材料中要求提供孩子的
智商测试结果。我们也是头一回听说有正儿八经的地方可以测智商,而不是网上那
种 IQ TEST。照着申请材料提供的单子打了几个电话,终于预约了一位注册临床心
理医生,开车离家大约20分钟。
测试当天,跟孩子说了个大概,让他到时候别太调皮。扁豆问:有什么奖赏吗?扁
豆妈说:晚上去 Todai 吃自助餐。三人开车到了医生的诊所,先填了些表格,医生
就把扁豆领进去了。然后就是大约两个小时的等待。期间,经常听到扁豆那“嘎嘎”
的笑声。看样子,他挺放松的。测试结束后,医生笑容可掬地把扁豆送出来,跟我
们说:下周取结果。开车回家的路上,我们问扁豆都测什么了?扁豆说:有游戏题,
也有问答题。有考词汇理解的... 阅读全帖 |
|
s****s 发帖数: 2163 | 45 Just my 2 cents..
1) first, are you absolutely sure there is at least 20%. As I said earlier.
I believe everyone believe they will hit and become something big.. How objectively you access ur chance?
2), even though the expectation is higher, it doesn't means it is better
even in math model's prospective. There is expectation and there is standard
deviation. The best is always higher expectation and lower standard
deviation. If you can't get both, you need to strike and decide your own
balance f... 阅读全帖 |
|
b******y 发帖数: 2729 | 46 【 以下文字转载自 Parenting 讨论区 】
发信人: Beida101 (北大学子), 信区: Parenting
标 题: BSO :十岁半男孩智商 160(>99.9%)
发信站: BBS 未名空间站 (Mon Sep 13 17:23:55 2010, 美东)
BSO :十岁半男孩智商 160 (>99.9%)
最近扁豆因故要参加一个儿童特殊教育的辅导课程。其申请材料中要求提供孩子的
智商测试结果。我们也是头一回听说有正儿八经的地方可以测智商,而不是网上那
种 IQ TEST。照着申请材料提供的单子打了几个电话,终于预约了一位注册临床心
理医生,开车离家大约20分钟。
测试当天,跟孩子说了个大概,让他到时候别太调皮。扁豆问:有什么奖赏吗?扁
豆妈说:晚上去 Todai 吃自助餐。三人开车到了医生的诊所,先填了些表格,医生
就把扁豆领进去了。然后就是大约两个小时的等待。期间,经常听到扁豆那“嘎嘎”
的笑声。看样子,他挺放松的。测试结束后,医生笑容可掬地把扁豆送出来,跟我
们说:下周取结果。开车回家的路上,我们问扁豆都测什么了?扁豆说:有游戏题,
也有问答题。有考词汇理解的... 阅读全帖 |
|
h*****s 发帖数: 821 | 47 They should list the income standard deviation from each major. I am pretty
sure that the EE/CS has a very low standard deviation while the biology
folks have a much bigger one. |
|
q***l 发帖数: 177 | 48 【 以下文字转载自 LosAngeles 讨论区 】
发信人: qdssl (honeydot), 信区: LosAngeles
标 题: FDA查处美国海尔斯制药有限公司在中国热卖的一氧化氮等保健产品
发信站: BBS 未名空间站 (Sat May 5 13:27:59 2012, 美东)
Health One Pharmaceuticals, Inc. of El Monte, CA was warned by the FDA that
a September/October inspection of the company's dietary supplement
manufacturing facility revealed serious violations of FDA's Current Good
Manufacturing Practice (CGMP) in Manufacturing, Packaging, Labeling, or
Holding Operations for Dietary Supplements regulation, includin... 阅读全帖 |
|
b******y 发帖数: 2729 | 49 【 以下文字转载自 Parenting 讨论区 】
发信人: Beida101 (北大学子), 信区: Parenting
标 题: BSO :十岁半男孩智商 160(>99.9%)
发信站: BBS 未名空间站 (Mon Sep 13 17:23:55 2010, 美东)
BSO :十岁半男孩智商 160 (>99.9%)
最近扁豆因故要参加一个儿童特殊教育的辅导课程。其申请材料中要求提供孩子的
智商测试结果。我们也是头一回听说有正儿八经的地方可以测智商,而不是网上那
种 IQ TEST。照着申请材料提供的单子打了几个电话,终于预约了一位注册临床心
理医生,开车离家大约20分钟。
测试当天,跟孩子说了个大概,让他到时候别太调皮。扁豆问:有什么奖赏吗?扁
豆妈说:晚上去 Todai 吃自助餐。三人开车到了医生的诊所,先填了些表格,医生
就把扁豆领进去了。然后就是大约两个小时的等待。期间,经常听到扁豆那“嘎嘎”
的笑声。看样子,他挺放松的。测试结束后,医生笑容可掬地把扁豆送出来,跟我
们说:下周取结果。开车回家的路上,我们问扁豆都测什么了?扁豆说:有游戏题,
也有问答题。有考词汇理解的... 阅读全帖 |
|
x*d 发帖数: 1696 | 50 Without using raw data, it’s hard to directly support your hypothesis. But
an easier way is to build the statistical model assuming your hypothesis is
true, then test it against other data.
The simplest model: For single season, taking any player who played 80 games
in a season. The probability of the highest score is 1/80 (one sided). Set
mean Xb (the average), standard deviation Si, highest score Xh, then Prob((
Xh-Hb)/Si) ~ 1/80. Obtain Si = 0.446Xb, i.e. the deviation of a players
season s... 阅读全帖 |
|