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Topic: Root mean square


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RMS

  
  NationMaster - Encyclopedia: Root mean square
In mathematics, root mean square (abbreviated RMS or rms), also known as the quadratic mean, is a statistical measure of the magnitude of a varying quantity.
In chemistry, the root mean square velocity is defined as the square root of the average velocity-squared of the molecules in a gas.
Root mean square speed is a measure of the velocity of particles in a gas.
www.nationmaster.com /encyclopedia/Root-mean-square   (1527 words)

  
 Smart Computing Encyclopedia Entry - root mean square (rms)
Root mean square, usually referred to simply as rms, is a mathematical term prevalent in many different fields, including electrical engineering and statistics.
The term refers to the process of deriving the square root of the average of a group of numbers and is one of the primary methods of measuring electrical output in volts and watts of an AC wave.
However, obtaining a root mean square measurement is considered a far better indicator of the quality of the speakers, not to mention a better way to rate the amplifier power.
www.smartcomputing.com /editorial/dictionary/detail.asp?guid=&searchtype=1&DicID=18842&RefType=Encyclopedia   (230 words)

  
 PlanetMath: root-mean-square
The root-mean-square of a random variable X is defined as the square root of the expectation of
See Also: arithmetic mean, geometric mean, harmonic mean, power mean, weighted power mean, arithmetic-geometric-harmonic means inequality, general means inequality, proof of general means inequality
Cross-references: arithmetic mean, standard deviations, expectation, square root, random variable, real numbers
planetmath.org /encyclopedia/RootMeanSquare3.html   (101 words)

  
 Root_Mean_Square
The square root of the average of the squares of a variable quantity.
In terms of voltage, the root mean square voltage is called the effective voltage, as opposed to the peak voltage which corresponds to the maximum
Relative levels of average, RMS and peak voltages in a sine wave signal.
www.sfu.ca /sonic-studio/handbook/Root_Mean_Square.html   (85 words)

  
 [No title]
To calculate the RMS (root mean squared) error the individual errors are squared, added together, divided by the number of individual errors, and then square rooted.
The term root cause analysis is commonly used in manufacturing to summarize the activities involved in determining the variables or factors that impact the final quality or yield of the respective processes.
It is the square root of the sum of squared standardized effects divided by the number of degrees of freedom for the effect.
www.statsoft.com /textbook/glosr.html   (4576 words)

  
 PlanetMath: mean square error
The square root of MSE is called the “root mean square error”, or rms error for short.
Cross-references: square root, sample mean, component, normal distribution, radius, independent, random variables, iid, unbiased estimator, side, right, bias, terms, variance, statistical model, estimator
This is version 7 of mean square error, born on 2002-01-05, modified 2006-09-23.
www.planetmath.org /encyclopedia/RootMeanSquare.html   (192 words)

  
 Root Mean Square Excel Here - Stunning Root Mean Square Excel On The Internet
What may come as a surprise, politicians agree that they identify Root Mean Square Excel, and what you might not realize is that single parent households seldom relate to them.
What you may not know, the vast majority habitually object to Root Mean Square Excel, yet few of us expected that educated urbanites mainly challenge the idea of them.
By a whisker, members of society certainly critique Root Mean Square Excel, however, many fail to understand why those we spoke with have been known to derive meaning from them.
www.bardito.com /language/root-mean-square-excel.html   (418 words)

  
 Embedded.com - Improve your root-mean calculations
If the processor doesn't implement a fast square root function, it must be implemented in software; although this yields accurate results, it may not be efficient.
One common method for computing the square root is Newton's method, which iteratively converges on a solution using an initial estimate.
The root-mean is computed as the square root of the average over time of its input.
www.embedded.com /showArticle.jhtml?articleID=180202382   (3099 words)

  
 PlanetMath: root-mean-square
are real numbers, we define their root-mean-square or quadratic mean as
The root-mean-square of a random variable X is defined as the square root of the expectation of
See Also: arithmetic mean, geometric mean, harmonic mean, power mean, weighted power mean, arithmetic-geometric-harmonic means inequality, general means inequality, proof of general means inequality
www.planetmath.org /encyclopedia/RootMeanSquare3.html   (101 words)

  
 Root-Mean Square Error in Passive Autofocusing and 3D Shape Recovery - Subbarao, Tyan (ResearchIndex)
In this paper we derive explicit expressions for the root-mean square (RMS) error in autofocusing based on image focus analysis.
Subbarao, and J.K. Tyan, "Root-Mean Square Error in Passive Autofocusing and 3D Shape Recovery", Proceedings of SPIE conference, Vol.
@misc{ subbarao96rootmean, author = "M. Subbarao and J. Tyan", title = "Root-Mean Square Error in Passive Autofocusing and 3D Shape Recovery", text = "M. Subbarao, and J.K. Tyan, Root-Mean Square Error in Passive Autofocusing and 3D Shape Recovery, Proceedings of SPIE conference, Vol.
citeseer.ist.psu.edu /287990.html   (489 words)

  
 [No title]
The "root-mean-square" is the square root of the arithmetic average of the squares.
Also, the geometric mean of a set of n positive numbers is the n-th root of their product.
The "finite population correction": for the variance of the sample mean, it is (N-n)/(N-1).
www.uic.edu /classes/idsc/ids460/frevslns.listing   (924 words)

  
 About Nexrad : Weather Underground
A tilt angle of 0.5° means that the radar's antenna is tilted 0.5° above the horizon.
High values of the RMS (Root Mean Square) error (in knots) mean that the radar was not very confident that the wind it is displaying is accurate--there was a lot of change in the wind during the measurement.
This is an estimation of the mass of water suspended in the storm per square meter.
www.wunderground.com /radar/help.asp   (2993 words)

  
 Root_Mean_Square   (Site not responding. Last check: )
The square root of the average of the squares of a variable quantity.
In terms of voltage, the root mean square voltage is called the effective voltage, as opposed to the peak voltage which corresponds to the maximum
Relative levels of average, RMS and peak voltages in a sine wave signal.
www2.sfu.ca /sonic-studio/handbook/Root_Mean_Square.html   (85 words)

  
 Root Mean Square Dance in ZhurnalWiki
An ordinary "Mean" is an average; to do a Root Mean Square just square each of the numbers before you average them, and then take the square root of the result.
In the first year I covered 1015 miles in training and races, giving a mean daily result of 2.8 miles, slightly under 20 miles/week.
This shows the power of the long run on the root mean square --- similar to the long run's power to improve stamina.
www.zhurnal.net /ww/zw?RootMeanSquareDance   (392 words)

  
 Amazon.com: Root-Mean-Square   (Site not responding. Last check: )
In the case of square root, however, the 2 can be omitted (i.e., the signs and ~ both mean square root).
Quantitative EEG analysis of sleep chronophysiology: A comparison between root mean square (RMS) estimation and fast fourier transformation (FFT) (Report) by Joseph D Assmus (Unknown Binding - 1993)
Square Foot & Assemblies Estimating Methods (Means Square Foot & Assemblies Estimating) by RS Means Company (Hardcover - Dec 2001)
www.amazon.com /s?ie=UTF8&keywords=Root-Mean-Square&tag=acronymfinder-20&index=blended&link_code=qs&page=1   (830 words)

  
 Root mean square value   (Site not responding. Last check: )
The RMS value is defined as the square root of the mean value of the squared function.
The mean value of the squared function is given by the integral of the squared function divided by the period of the integration.
The RMS value is then the square root of this.
www.ee.surrey.ac.uk /Courses/ee1.cct/circuit-theory/section2/rmsvalue.html   (180 words)

  
 Maths Calculator - Root Mean Square/Quadratic Mean Calculator, calculate RMS, Quadratic Mean
Maths Calculator - Root Mean Square/Quadratic Mean Calculator, calculate RMS, Quadratic Mean
Find the Root Mean Square/Quadratic Mean of the given numbers.
Calculating Root Mean Square/Quadratic Mean is made easier.
www.easycalculation.com /statistics/root-mean-square.php   (159 words)

  
 Sales & Operations Planning - Software   (Site not responding. Last check: )
The Root Mean Square error is a measure of the deviation of the forecasted value from the actual value.
In Root Mean Square the deviations are summed and then divided by the number of time periods in the time series.
Lastly, the square root of this quantity is evaluated.
www.johngalt.com /root_mean_square.shtml   (282 words)

  
 The Root Mean Square   (Site not responding. Last check: )
The root-mean-square (RMS) is not a statistic you hear to much about, because it is mostly used as a part of other statistics, such as the standard deviation, which are much more famous.
The root mean square is a measure of the magnitude of a set of numbers.
Instead of wiping out the signs, they square every number (which makes them all positive), then take the square root of the average.
www.analytictech.com /mb313/rootmean.htm   (190 words)

  
 root mean square concept from the Astronomy knowledge base   (Site not responding. Last check: )
root mean square concept from the Astronomy knowledge base
abstraction > mathematical concept > number > quantity > statistical quantity > root mean square
has definition The square root of the mean square value of a set of numbers (see also random walk).
www.site.uottawa.ca:4321 /astronomy/rootmeansquare.html   (56 words)

  
 Learn Root Mean Square(RMS)/Quadratic Mean(QM) tutorial, definition, example, formula
Square root of the mean square value of a random variable.
In otherwords, we can define the root mean square is a statistical measure of the magnitude of a varying quantity.
Root Mean Square(RMS) Example: To find the Root Mean Square of -2,-1,-3,1,5.
www.easycalculation.com /statistics/learn-rms.php   (204 words)

  
 What is root-mean-square? - a definition from Whatis.com - see also: rms
(1) The square of the waveform function (usually a sine wave) is determined.
(3) The square root of the function resulting from step (2) is found.
In a circuit whose impedance consists of a pure resistance, the rms value of an AC wave is often called the effective value or DC-equivalent value.
whatis.techtarget.com /definition/0,,sid9_gci213722,00.html   (310 words)

  
 root-mean-square value
The uniformly-distributed white noise has a zero mean
In the frequency domain, the quantization noise is interpreted by means of a
When we are given a SNR of 96.3dB with 16 bits, it means that the
www.faqs.org /docs/sp/sp-24.html   (278 words)

  
 RMS - Reason Maintenance System, Record Management System, Root Mean Square
RMS is a acronym that can contains many meanings which are listed below.
There may be many popular meanings for RMS with the most popular definition being that of Reason Maintenance System, Record Management System, Root Mean Square
If we missed the mark, we would greatly appreciate your help by entering the correct or alternate meaning in the box below.
www.auditmypc.com /acronym/RMS.asp   (217 words)

  
 What is root-mean-square? - a definition from Whatis.com - see also: rms
(1) The square of the waveform function (usually a sine wave) is determined.
(3) The square root of the function resulting from step (2) is found.
In a circuit whose impedance consists of a pure resistance, the rms value of an AC wave is often called the effective value or DC-equivalent value.
searchsmb.techtarget.com /sDefinition/0,,sid44_gci213722,00.html   (372 words)

  
 The DJ List - Record Labels: ROOT MEAN SQUARE
The DJ List - Record Labels: ROOT MEAN SQUARE
You are in: Home → Record Labels → R → Ro → ROOT MEAN SQUARE
Note that it requires an additional registration to join.
www.thedjlist.com /labels/R/RO/ROOT_MEAN_SQUARE   (44 words)

  
 Root Mean Square   (Site not responding. Last check: )
The Root Mean Square is implemented as a composite function.
The formula of the Root Mean Square is:
Where ‘a’ is an array of elements and n is the number of the elements.
www.nevron.com /ChartActiveXHelp/Root_Mean_Square.htm   (33 words)

  
 Descriptive Statistics - Descriptive Statistics - Central Tendency - Root Mean Square   (Site not responding. Last check: )
Descriptive Statistics - Descriptive Statistics - Central Tendency - Root Mean Square
[Home] [Up] [Arithmetic Mean] [Weighted Mean] [Comparison 1] [Geometric Mean] [Harmonic Mean] [Quadratic Mean] [Comparison 2] [General Mean] [Relationship] [Median 1] [Median 2] [Midrange] [Midhinge] [Tukey's Trimean] [Midmean] [Trimmed Mean] [Winsorized Mean] [Root Mean Square]
NEWS FEED from BBC News : Statistical Research
www.resacorp.com /root_mean_square.htm   (757 words)

  
 root-mean-square
does anyone know how to write php code for a root mean square, i was brosing on the net and saw it and wanted to know how it was done.
I don't fully understand, do you want to know how to calculate the RMS of an array of values?
well i saw on a rating thing, they use a root mean square to combat someone who just keeps putting 1111111111111111111111111111111 for everone...
www.phpfreaks.com /forums/index.php?topic=102055.0;prev_next=prev   (435 words)

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