Standard Deviation
Standard Deviation, often abbreviated SD, is a measure of glucose variability. From "Pumping Insulin", by John Walsh and Ruth Roberts, page 19: "Emphasis is rightly placed on high blood sugar levels as a cause for damage, but evidence also points to up and down or unstable readings as an additional culprit." Standard deviation is obtained from insulin pumps, and some glucose meters (including cgm) and the programs that the meters and pumps upload their data to. What are we measuring here? We are measuring how tightly packed your readings are around your average, or to state the opposite, [suite...]
Date: 20071029 05:39:58
Articles de blogs
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Vidéos
(1)
The Financial Crimes: Six figure salaries and other outliers
We also know that due to the minimum wage there are no full time equivalent employees earning less than £14,000, so the difference between £29,000 and £14,000 would be about the same as 3 standard deviations, or one standard deviation is about £5,000. Which means that anyone earning more than £100,000 would be about 14 standard deviations higher than the mean, which implies a probability far closer to zero than the observed 38,000 / 6.051m = 0.6%. Now I am not saying that salaries should be determined by statistical analysis or that they should be consistent with any particular [suite...]
Date: 20100922 15:51:00
Expectations and Variability  Tomahawk Nation
Having said all that, the exact distribution is very easy to calculate, and since the normal approximation also assumes independence (to obtain the standard deviation for the approximating normal distribution) and is still only an approximation, I don't really see any advantage to it. Also, it could yield a pretty bad approximation for someone who's pergame winning probabilities were fairly weird, or if we were doing things later in the season (with fewer games to add up, the central limit theorem won't help much). And finally one more comment on the independence assumption. Most of us [suite...]
Date: 20100922 23:05:58
Calculating correct mean and standard deviation
This question is asking me to calculate the correct mean and standard deviations for data that was overmeasured by 3.5cm. The problem is that I only have the sample mean and standard deviation, both calculated from the incorrect measurements (which it does not give). What do I do...? There were 25 measurements taken. I have a feeling that I should calculate the mean and standard deviation using 25 values of "3.5cm" and then subtract the results from the original incorrect values, but this is a total [suite...]
Date: 20100817 07:00:00
Goa Trance Visions v.1 Night: Mubali – Standard Deviation  eGoa
Posted by: eGoa in Videos  posted on September 22, 2010 at 11:45 pm  Tags: Deviation, Mubali, Night, standard, Trance, VISIONS CREDITS: Artwork by: Doctor Spook Compiled By:Goa Doc aka Doctor Spook Distribution by Saiko Sounds and Geomagnetic Rec. (p) and © Goa Records + Geomagnetic.tv www.goarecords.com www.geomagnetic.tv info@geomagnetic.tv More info online. 11 new MINDMENDING psychedelic 3D animated VJ music videos synched to the top Goa dance floor hits! All mixed together by GOA DOC aka Doctor.Spook to create an instant trance party anywhere fast! Take a journey on this [suite...]
Date: 20100923 11:45:55
DoubleVerify Determines Which Ad Tech Firms You Can Trust » Adotas
The best performing ad networks averaged a 2% average noncompliance rate, while the bottom 10 recorded a 37% average; the standard deviation for the top networks was 17% across campaigns while the bottom registered a 28% standard deviation. The most compliant platforms — e.g. DSPs and ad exchanges — had a 6% average noncompliance rate, while the underperformers registered a rate five times as high. “Our data shows that improvements are being made across the board to increase brand safety and trust,” said DoubleVerify CEO Oren Netzer. “Verified campaigns especially showed vast [suite...]
Date: 20100923 15:52:10
Standard Deviation  Fashion. Design. Culture. Art. Myko.: 22 way ...
Myko .... is a menswear designer, fashion illustrator, a trend forecaster and a director of creative services in Los Angeles. He also just happens to have a degree in Neurobiochemistry. Standard Deviation was part of his case study when he competed in 2009 and was a national finalist for the YMA + Geoffrey Beene Fashion Scholarship Fund competition (TOP 8 in the Nation!). Now, it's a blog. Enjoy! View my complete [suite...]
Date: 20100901 22:16:00
Bollinger bands – How To Master Bollinger Bands at Entertainment Today
So you would lay down a 21 day moving average and then a 2.0 standard deviation set of Bollinger bands and when price closed outside of either band it is said to have closed outside a 2 standard deviation band. 2 standard deviatons from the mean. Crazy I know, so watch the video and Ill explain everything and if you want more videos visit our site at [suite...]
Date: 20100922 07:46:58
Chart Period VWAP and Standard Deviation Bands  ThinkScripter
The lines are a chart period VWAP (Volume Weighted Average Price) and three VWAP standard deviation bands which default to 1/2/3 sigma but are user selectable. By chart period I mean that the VWAP is not by day or week (like the TOS [suite...]
Date: 20100404 14:06:29
IATA advocates desperate need for a wholistic vision for Indian ...
Each deviation from the global standard adds costs but does not improve security. The Indian government committed to develop a program based on global standards with a single portal for transmitting data. The deadline for that has passed and we are still waiting. And to add insult to injury, airlines are now being threatened with fines for data transmission errors resulting from the complexity of the system,”. [Mr. Bisignani the Sanskrit word for difficult is Kashtam. Marry this to the addage  "the squeaky wheel gets the grease". Get the hint [suite...]
Date: 20100923 14:45:00
Standard Deviation  Moments  Statistics in C, C++ and Excel
Calculates the standard deviation of a given [suite...]
Date: 20030811 07:00:00
Standard deviation error bars don't work  Excel Help Forum
Welcome to the Excel Forum If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to [suite...]
Date: 20100817 20:32:27
Children's Wear  Term Papers  Krombie187
3 months which were the months when the demand on the units was the highest was 2 standard deviations from the mean, ranging from 57700 to 64300 units. Based on this data, during the summer seasonal time frame, Trendy Children's Wear [suite...]
Date: 20100922 08:03:27
work: The Myth of Diversification: Risk Factors vs. Asset Classes
In contrast, when both markets were down more than one standard deviation, the correlation between them was +76%. (Standard deviation measures the dispersion of a set of data from its mean.) Should we expect similar asymmetry going forward? As our colleague Richard Clarida noted in a recent essay, we live in a New Normal world in which markets oscillate between two regimes: “risk on” and “risk off.” In such a world diversification across asset classes might work on average, but it might feel like having your head in the oven and your feet in a tub of ice: Even though your average body [suite...]
Date: 20100922 01:05:00
Understanding Normal Distribution Tables and Probabilities
The normal distribution can be used to determine the probability that a measurement is within a given range, if the mean and standard deviation are known. The general characteristics of a normal distribution are described in the article "The Normal or Gaussian Distribution." If it is decided that a set of observations fall approximately into a normal distribution, most people then use these numerical values to obtain probabilities. Standardisation of Experimental Data The first step is usually to standardise the experimental data. An experimental measurement can be converted to a distance in [suite...]
Date: 20100725 14:45:26
Bollinger Bands Secrets That You Should Know! :Forex Training
Statistically wе measure volatility wіtһ standard deviation. Bυt tһеrе іѕ a highly рοрυƖаr technical indicator tһаt ԁοеѕ іt fοr уου graphically bу рƖοttіחɡ tһе standard deviations. Tһіѕ іѕ tһе Bollinger Bands. Two bands аrе рƖοttеԁ. One above tһе moving average wіtһ a period οf 20 аחԁ one below tһе moving average. Period οf 20 іѕ used bесаυѕе іt іѕ a ɡοοԁ representation οf аח intermediate trend. Bollinger bands mау bе applied tο аחу market οr security. Aחу timeframes frοm daily, weekly, monthly tο [suite...]
Date: 20100920 13:45:15
Understanding tDistribution Tables and Probabilities
This article describes how information about how far a sample is from the mean relative to the standard deviation can be interpreted in the form of probabilities using statistical tables and Excel functions when using the tdistribution. Although the tdistribution has similar properties to the more widely understood normal distribution, when using statistical tables and Excel, the tdistribution is often presented very differently. A reason for this is that it is possible to generate tdistribution tables for any chosen number of degrees of freedom, so there would be literally hundreds of [suite...]
Date: 20100802 14:25:29
Pat'sBlog: Standard Deviation as Distance
As we were talking I bemoaned the fact that few introductory textbooks seem to really help kids to develop any intuitive idea of what the standard deviation is or how it works. As we talked, I mentioned that I thought there was a geometric approach to the standard deviation that might help make it more clear. You be the judge. I think the standard deviation is most easily approached as a distance (more specifically a sort of average of distances). Most high school stats students can quickly find the distance between two points on the plane using the square root of the sum of the squares of [suite...]
Date: 20100712 10:52:00
Mutual funds: What you should know about Standard Deviation ...
all posts education center news resources In a previous post on measurements of risk in mutual fund research, we focused on the use of concepts such as beta, sharpe ratio and standard deviation as tools to evaluate the risk of a mutual fund. Standard deviation is probably the most common measure of a mutual fund’s risk, and is worth a closer look. Like most things, if used without a proper understanding, it can be misleading and worthless; but if used correctly it can be of significant value in helping you make better investment choices. Standard deviation quantifies how much the [suite...]
Date: 20100922 19:20:42
Variance, Standard Deviation and Correlation
While making an investment decision, it is important to assess the risk/return profile of any investment. The relation between risk and return raises three basic questions: How do I estimate the percentage return that I will receive on an investment? How much risk does an asset add to a portfolio? What can I do to eliminate some of that risk? To answer these questions, we need to understand the key statistical concepts that are applied to financial assets. They are: expected returns, variance and standard deviation, and correlation. Let us look at each of them in detail: Expected Return The [suite...]
Date: 20100610 06:01:41
Know the Fundamentals of Investment Portfolio Management
According to this theory; variance (that can be in its standard deviation or in square root) of return and mean return are the two fundamental factors that can automatically determine the functionality of the shareholder, investor or even depositor. Based on this concept, an individual can depict it as a portfolio theory based on two parameters or even meanvariance portfolio theory. It is always preferable option for an investor to return in lower variance in support of a higher one and mean return to be higher in support of a lower one. Hence in investment portfolio management, balanced [suite...]
Date: 20100923 11:59:19
Current Standard Deviation Levels For The U.S. Stock Market ...
For those of us who enjoy Bollinger Bands on our market charts, you’ll also enjoy Standard Deviation Bands… which are just extra Bollinger Band lines. For reference, the Bollinger Band indicator takes the 20 day simple moving average of price and then calculates – draws lines – two standard deviations (a volatility indicator) up and down that mean (average) price. Therefore, Standard Deviation bands do the same thing as the typical Bollinger Band indicator, but allow you to plot each standard deviation price (and line) for the current price. Here – let’s look at the current [suite...]
Date: 20100621 00:01:07
California Marijuana Legalization Measure Has NinePoint Lead in ...
California Marijuana Legalization Measure Has NinePoint Lead in Latest Poll Proposition 19 pot legalization initiative leads 47%38% in the latest Public Policy Polling survey of likely voters. That's good, but not great, news for the campaign. Good because nine points is a nice cushion six weeks out from election day. But not great because Prop 19 is still polling under 50% when it needs 50% plus one vote to win and because the race is closer than in the previous Public Policy Polling survey in July, when it led 52%36%. The poll is an automated phone survey of 630 likely voters, with a [suite...]
Date: 20100923 02:11:32
MRCI Implied Volatility Studies  MartinKronicle
This course is a broad overview and discussion of the salient subject areas that one will need to navigate to fully understand the commodity space. Entering Orders Common Mistakes Rules and regulations Markets and Exchanges Learn more Students will be introduced to what makes each of the commodity sectors tick from an international economic standpoint. Grains  corn, wheat, rice Metals  gold, silver, copper Energies  crude oil, gas Softs  coffee, sugar, cocoa Learn more This course sets the record straight about what is a predictive indicator and what is a lagging indicator in the [suite...]
Date: 20100923 10:00:02
Forex Technical Indicator : Standard Deviation  Forex Hedging ...
Standard Deviation — value of the market volatility measurement. This indicator describes the range of price fluctuations relative to simple moving average. So, if the value of this indicator is high, the market is volatile, and prices of bars are rather spread relative to the moving average. If the indicator value is low, the market can described as having a low volatility, and prices of bars are rather close to the moving average. Normally, this indicator is used as a constituent of other indicators. Thus, when calculating Bollinger Bands, one has to add the symbol standard deviation [suite...]
Date: 20060811 07:00:00
Schnoo Schnoo: Binary Operations
The cell area that will be obtained here will have a lot of standard deviation. Next, I tried the opening operator wherein it is the dilation of the erosion of the image and its structure factor. And I got this image: There are few clusters and the normal sized cells are defined. This is better than closing in in finding out the area of the cells. BWLABEL function is very cool. It names the blobs and give the coordinates of each pixel in the blob. Using this function, the area per blob/ cell is easily obtained. After obtaining the cell area, I constructed a structure factor in relation to the [suite...]
Date: 20100923 10:04:00
Current Standard Deviation Bands for NASDAQ and Dow Jones  Afraid ...
I received a lot of positive responses and questions to my recent “Standard Deviation Bands for the S&P 500″ post, and I wanted to followup by posting the current standard deviation levels and bands for the NASDAQ and Dow Jones Index. Without further delay, the NASDAQ Index: The logic of this type of chart is to show volatility beyond what standard/typical Bollinger Bands reveal – Bollinger Bands only show 2 standard deviations from the mean or average (blue line). These charts take the standard 20 day average used in the Bollinger Band standard deviation calculation and then show all [suite...]
Date: 20100620 16:45:26
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