One standard
deviation is the range which includes 65 % of all scores, two standard deviations includes 95 % of all scores.
Not exact matches
Standard
deviation simple tells us how much of a
range there
is around the average the majority of the time.
What this means
is that, even though the S&P
was down 1.22 percent in the first quarter, the decline
was well within its expected
range of one standard
deviation, which occurs roughly 68 percent of the time.
In either case, the standard
deviation or typical «
range of error»
is about + / - 2 %.
Develop modeling instincts so modelers know what assumptions
are reasonable and likely to result in dependable results, and what parameter
ranges are realistic to account for invariable
deviations of reality from models.
The 17 - billion - solar - mass estimate for the central black hole in NGC 1600
is much more precise, with a
range (standard
deviation) of 15.5 to 18.5 billion solar masses.
Standard reference
ranges are built to include two standard
deviations from the median up and down for all people tested at a given reference labs.
If you take the average person around here who says, «Yeah, I
'm healthy» and you take a plus or minus standard
deviation, the bottom of your reference
range would
be probably like zero.
Both tests
are scored on a scale of 0 - 1,000, with a mean of 500 and a standard
deviation of 100; however, the true
range of values lies between the 300s and the 600s.
The differences in performance
are large,
ranging from 15 percent (in science) to 25 percent (in math and reading) of a standard
deviation.
The first column, FRPM 0 - 33 %, represents schools in wealthier communities; the far right column, FRPM > 89 %, represents high - poverty schools; and the middle column represents schools that
are closer to the state average on the indicator,
ranging from one standard
deviation above to one standard
deviation below the mean.
The differences
are statistically significant,
ranging from 17 percent to 22 percent of one standard
deviation.»
Optional Features: Lane Keeping Assist, Infotainment With Android Auto, Infotainment With Apple Carplay, Engine Cylinder Deactivation, Roll Stability Control, Steering Wheel Mounted Controls Voice Recognition Controls, Stability Control, Rear View Monitor In Dash, Multi-Function Display, Driver Details System, Security Remote Alarm Security alarm, Memorized Settings Number Of Drivers: 2, Turn - by - Turn Navigation - Satellite Communications, Satellite Communications OnStar, IntelliLink - Satellite Communications, Audio - SiriusXM Satellite Radio, Electronic Messaging Assistance With Voice Recognition, Electronic Messaging Assistance With Read Function, Real Time Traffic, Parking Sensors Rear, Parking Sensors Front, Phone Wireless Data Link Bluetooth, Memorized Settings Includes Adjustable Pedals, Memorized Settings Includes Steering Wheel, Memorized Settings Includes Exterior Mirrors, Memorized Settings Includes Driver Seat, Blind Spot Sensor, Pre-Collision Warning System Visual Warning, Pre-collision Warning System Vibrating Driver Seat, Pre-Collision Warning System Audible Warning, Navigation System Touch Screen Display, Navigation System With Voice Recognition, Wifi Capable, Head - Up Display, Audio - Internet Radio: Pandora, Lane
Deviation Sensors, Seats - Passenger Seat Power Adjustments: 4 - Way Power Lumbar, Seats - Passenger Seat Power Adjustments: Height, Seats - Driver Seat Power Adjustments: Height, Doors Rear Door Type: Sensor - activated, Autonomous Braking, Footwell Lamps, Exterior Mirrors Reverse Gear Tilt, Audio System one Subwoofer, Windows Lockout Button, Warnings And Reminders Turn Off Headlamps, Warnings And Reminders Low Oil Level, Warnings And Reminders Low Fuel Level, Warnings And Reminders Low Battery, Trip Odometer, 3rd Row Seat Headrests: Height Adjustable, Suspension Rear Coil Springs, Suspension Front Spring Type: Coil Springs, Storage Door Pockets, Seatbelts 3rd Row 3 - Point, Seatbelts 2nd Row 3 - Point, Number Of 3rd Row Headrests 2, Number Of Rear Headrests 2, Number Of Front Headrests 2, Front Seatbelts: 3 - Point, Front Headrests Adjustable, Digital Odometer, Clock, Child protection system, Body Side Reinforcements Side Impact Door Beams, Audio - Antenna: Mast, Audio - Antenna: Diversity, Assist Handle Rear, Assist Handle Front, Adjustable Rear Headrests, Storage Sunglasses Holder, Seatbelts Seatbelt Warning Sensor: Driver And Passenger, Seatbelts Emergency Locking Retractors: Front And Rear, Running Boards Black, Roof Rails Chrome, Multi-function Remote Trunk Release, Audio - Speed Sensitive Volume Control, A / c - Rear - Single Zone, 2 - stage Unlocking, Storage Front Seatback, Steering Wheel Mounted Controls Phone, Steering Wheel Mounted Controls Multi-Function Screen Controls, Steering Wheel Mounted Controls Cruise Controls, Steering Wheel Mounted Controls Audio, Rear Bumper Color Body - Color, Multi-function Remote Keyless entry With Panic Alarm, Headlamps Wiper Activated, Floor Material Carpet, Transmission Tow / Haul Mode, Grille Color Chrome Surround, Warnings And Reminders Maintenance Reminder, Vanity Mirrors Dual Illuminating, Overhead Console, Conversation Mirror, Seatbelts Seatbelt Pretensioners: Front, Seatbelts Emergency Locking Retractors: Front, Rear Seats Reclining, Reading lights Rear, Reading lights Front, Passenger Seat Power Adjustments: Recline, Grille Color Chrome, Driver Seat Power Adjustments: Recline, Air bags - Passenger - Occupant Sensing Deactivation, Traction Control, Storage Cargo Net, Seats Perforated Upholstery, One - Touch Windows: 4, Fuel Economy Display
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By doing so, we
are better able to short - circuit our behavioral tendencies and recognize that near - term performance
is well within the
range of reasonably expected
deviations the vast majority of the time.7 From this perspective, we can conclude that investors
are better off doing nothing much of the time, as opposed to doing something, assuming that we have positive priors for the strategies we
are evaluating.8
When a fund has a high standard
deviation, its range of performance has been very wide, indicating that there is a greater potential for volatility.Higher the Standard Deviation higher the fluctuations / volatility in
deviation, its
range of performance has
been very wide, indicating that there
is a greater potential for volatility.Higher the Standard
Deviation higher the fluctuations / volatility in
Deviation higher the fluctuations / volatility in returns.
When a mutual fund has a high standard
deviation, it means its
range of performance
is wide, implying greater volatility.
While the best runs of Closing
Range are only 1.56 standard
deviations away.
I would expect long - term stock returns to
be in a
range of 5.25 % real (15 % standard
deviation * 0.35 Sharpe ratio) to 4 % real (2.2 % yield + 1.8 % real payout growth).
The reasonable
range is calculated as + / - 1 standard
deviation from the calculated benchmark using 10 year monthly rolling average returns over the 10 years to Oct» 15.
A high standard
deviation indicates that the
range is wide, implying greater potential for volatility.
Standard
deviation is a statistical measure of the
range of a portfolio's performance.
Over the interest rate
range of 0 % to 30 %, the average absolute
deviations from perfect doubling using the Rule of 72
was 2.794 %.
If a portfolio has an average expected return of 9.7 % and a standard
deviation of 7.6 %, that means in 19 years out of 20 its annual return can
be expected to
range between — 6 % and 25 %.
There
is very good consistency between past and future DGRs, which have similar medians, means, standard
deviations, and
ranges.
That study forecasts standard
deviations for bonds in the 7 to 9 %
range, which
is a little higher than historical data.
These
are ideal
ranges; slight
deviations are permissible.
The standard
deviation of the residuals from a linear regression to annual averages 1975 - 2007
is 0.472, so we expect a
range of variation of roughly + / - 0.94 deg.C from the long - term trend.
Applying six different models here, we estimate that CH4, NOx, CO and NMVOCs
are respectively responsible for 44 ± 12 % (± 1 standard
deviation range), 31 ± 9 %, 15 ± 3 % and 9 ± 2 % of the 1850s — 2000s ozone RF (Table 10).»
«Because T1 has no anthropogenic sulphate aerosol (ASA) forcing, its mean (Î 1/4 = 1.43 °C, median
m = 1.38 °C) standard
deviation (0.35 °C) and skewness (
s = 0.80)
are small, and its 90 % confidence interval 0.94 °C to 2.04 °C,
is narrower and shifted toward smaller values than the IPCC
range of 1.5 °C to 4.5 °C.
For instance, I'd like to know if the
range and standard
deviation of global temps
is also increasing (I've asked this before).
There
are any number of other statistics one can also use — the ratio of the standard
deviation to the mean, the
range, and so on.
In particular, there
is now a vague but widespread sense that the entire
range of 25 - 40 % for reductions in Annex I countries
range is acceptable, and that «significant
deviation from the baseline» might
be attained by very modest developing country action.
These
deviations from the traditional scientific process
are brought about by a combination of strategies and tactics: professionalization of climate scientists, [39] the use of artificially constructed scientific consensus, [40] a wide
range of rhetorical devices, [41] intimidating language, [42] «bullying» strategies, [43] political attacks, [44] and even civil and criminal litigation.
Why
is range a preferable measure to standard
deviation?
With the 1870 - 1950
range, my title of «to within a millikelvin» therefore
is effectively claiming «to within five standard
deviations.»
What substantive point
are you trying to make here by insisting that I must have meant
range instead of standard
deviation?
Are you surprised that, having defined the starting point, and the error
range, you can determine a standard
deviation for a set of numbers generated on that basis?
By knowing what «normal» should
be and the expected
range of «wandering» above and below «normal», you can fine tune estimates of expected
deviations from «normal» in a non-linear bi-stable system with recurrent decay patterns.
Data
is shown with + / -3 sigma
deviations, as all data within that
range is considered a «normal» or Gaussian distribution.
Working from an ancient formula on optimal dam design he devised the equation: log (
R /
S) = K * log (N / 2) where
R is the
range of the time series,
S is the standard
deviation of year - to - year flood measurements and N
is the number of years in the series.»
This
range is constructed by computing the standard
deviation (σ) of the 40 regression values at each grid box for each variable (SLP, SAT and P) based on detrended data during 1920 — 2012, and subtracting / adding these values (multiplied by two) from / to the ensemble mean regression value.
If we have prior knowledge that the real date
is between 300 and 700 and if the red distribution tells the accuracy of determining the C14 data we know already before the collection of the data that we
are likely to learn essentially nothing from measuring the C14 date, because the calibration line
is close to horizontal over that
range, horizontal enough to have all possible values within a
range of less than one standard
deviation of the empirical accuracy.
Investigate How big
is a raindrop collect data and analyse mode, mean and median,
range, interquartile
range and standard
deviation etc. - with thanks to Stephen Lyon at the National STEM centre.
As a rule of thumb the
deviation of random garbage data should
be 1/3 the
range of temperature anomalies or 1/3 (0.4 --0.2) ~ 0.2 degrees.
I could
be wrong, but I believe our normal temperature
is somewhere in the
range of 283 degrees Kelvin, and the normal
deviation is around 2.5 degrees.
NSIDC
is transitioning the sea ice extent time series graphs to show interquartile and interdecile
ranges, with the median extent value, in place of standard
deviations and the average values.
If we
are not three standard
deviations from the norm, we
are still within the
range of natural variation and there
is no reason to look for any cause.
The 1981 - 2010 average
is in dark gray, and the gray area around the average line shows the standard
deviation range of the data.
The gray region shows the ± 2 standard
deviation extent for that average; statistically speaking it
's an expected
range of extent (it
's actually more subtle than that, but that
's enough to understand what
's going on here).