It also points to a wide standard of deviation in its results that shows how some sites remain very vulnerable even as others patch their flaws.
FORBES: Researchers Say The Web May Be Offering Fewer Footholds To Hackers
He will receive quarterly reports on the progress of the disposals and the privatisation, and promises to reopen the case on the first sign of deviation.
The most efficient investments are those such that no other investment has a higher return for the same amount of standard deviation.
That, combined with accurate card-counting and proper bet-sizing, will inevitably lead to winning, as long as enough hands are played beyond the effects of standard deviation issues.
FORBES: Luck Vs. Skill, Process Vs. Outcome, Doing Vs. Not Doing
In STAC (The Securities Technology Analysis Center) benchmarking, Solarflare and IBM achieved a top tested speed of 2.3 million messages per second with a mean latency of 14 microseconds and a standard deviation of latency at 2 microseconds using standard Ethernet and UDP protocols.
FORBES: HPC -- Solarflare Server Adapters Cut Through I/O Bottlenecks
We sought to account for the variations of baseball's different eras with the tried and true tool of standard deviation, which allowed us to look past raw win totals to measure the degree to which a team stood above the pack in a given season.
The last column in the table is also worthy of note, as it shows the standard deviation of returns.
FORBES: Quadruple Witching Expiration Week Not So Wicked, Except For OpenTable
To make all the curves comparable, he expressed the values of the actual deviations as fractions of a standard deviation, and their frequencies as proportions of their total number.
However, a couple of problems arise when we talk about risk as a deviation of return.
Since Jan 2001, Life Science investing as a percentage of total VC investing each quarter has averaged 26% with a standard deviation of only 5%.
For example, two of eight American League clubs in 1927 posted winning percentages below .400, leading to a league-wide standard deviation of .123 percentage points above and below the average .500 record.
December is also the least historically volatile month, with a standard deviation of returns of 3.17%.
It's lost 0.3% a year over three years with a standard deviation of 14%.
Ideally, reviews and user reviews should generally fall within a standard deviation of each other.
Specifically, I look to see whether bullish and bearish sentiment are within or beyond one standard deviation of their averages.
Consumer staples, which had a 10-year annualized standard deviation of just 13%.
FORBES: Sector Investing Much Smarter Than Trying To Guess What's Growth And Value
The MSCI Emerging Markets Index is only about a half of a standard deviation from its mean over the same time frame.
For example, I just calculated the standard deviation of the temperatures measured at one instant by 14 weather stations located in my county.
Once you know the average return, the standard deviation of each index and the correlation coefficient between each pair of indexes, the rest is math.
Even with the decline, bullish sentiment is just slightly beyond one standard deviation of its historical norm, making the current reading atypical, but still not an outlier.
Sure enough, using standard deviation of the returns, the day after Election Day is significantly more volatile than a normal day by about 80% (1.99% vs. 1.14%).
FORBES: Day After Presidential Election Usually Rocky For Stocks
The vertical axis (Y axis) is the compounded portfolio return and the horizontal axis (X axis) is portfolio risk as measured by the annual standard deviation of return.
The table includes an annualized return, annual standard deviation of the technique, best and worst calendar year return, and the high and low amount in equity over the period.
The no-rebalancing strategy had a standard deviation of 12.7%.
Other studies have found that to some extent it is possible to predict future house-price movements from information available now, namely past price increases and the deviation of prices from their long-run trend.
But since a single degree deviation of the face angle can cause you to miss a six foot putt, this data can help set you straight, once you figure out how to use it.
ENGADGET: 3BaysGSA Putt: a Bluetooth golf gadget that puts eyes in your putter (hands on)
People have more vivid memories of the colorful, Super Bowl Shuffling 1985 Bears (also 15-1 with a second-best all time standard deviation of 2.10), because that club was a one-year wonder that never got back to a Super Bowl.
FORBES: The Dominant Super Bowl Team Is Becoming Extinct - And That's Good For Business
Proof of this can be found in the standard deviation, a measure of how volatile annual returns were.
What I do know is that for the limited data set I have, the CRB index produced a nominal compound return of 0.77%, a real return of minus 2.16%, a standard deviation that is twice that of Treasuries, had a twelve month period with a loss of 48.74% and had a 27 year period with a negative compound return.
应用推荐