Can Percent Error Zero
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Can Percent Error Be Negative In Chemistry
is zero? up vote 10 down vote favorite 3 How do I calculate relative error when the true value is zero? Say I have $x_{true} = 0$ and $x_{test}$. If I define relative error as: $\text{relative error} = \frac{x_{true}-x_{test}}{x_{true}}$ Then the relative error is always undefined. If instead I use the definition: $\text{relative error} = \frac{x_{true}-x_{test}}{x_{test}}$ Then the relative error is always 100%. Both methods seem useless. Is there another alternative? statistics share|cite|improve this question asked Feb 15 percent error calculator '14 at 22:41 okj 9461818 1 you need a maximum for that.. –Seyhmus Güngören Feb 15 '14 at 23:06 1 Simple and interesting question, indeed. Could you tell in which context you face this situation ? Depending on your answer, there are possible alternatives. –Claude Leibovici Feb 16 '14 at 6:24 1 @ClaudeLeibovici: I am doing a parameter estimation problem. I know the true parameter value ($x_{true}$), and I have simulation data from which I infer an estimate of the parameter ($x_{test}$). I want to quantify the error, and it seems that for my particular case relative error is more meaningful than absolute error. –okj Feb 17 '14 at 14:05 1 What about $\text{error} = 2 \frac{x_{true}-x_{test}}{x_{true}+x_{test}}$ if it is for an a posteriori analysis ? –Claude Leibovici Feb 17 '14 at 14:16 1 @okj. I am familiar with this situation. Either use the classical relative error and return $NaN$ if $x_{true}=0$ either adopt this small thing. It is always the same problem with that. You also can add a translation to the $x$'s to get rid of this. –Claude Leibovici Feb 17 '14 at 15:40 | show 4 more comments 4 Answers 4 active oldest votes up vote 5 down vote accepted First of all, let me precise that I am not a statistician but a physicist very concerned by numerical issues in particular
Life in the Universe Labs Foundational Labs Observational Labs Advanced Labs Origins of Life in the Universe Labs Introduction http://astro.physics.uiowa.edu/ITU/glossary/percent-error-formula/ to Color Imaging Properties of Exoplanets General Astronomy Telescopes Part https://www.quora.com/When-doing-a-lab-practical-I-got-a-theoretical-value-0-and-practical-value-0-00012-What-is-the-percentage-error-Is-it-infinite 1: Using the Stars Tutorials Aligning and Animating Images Coordinates in MaxIm Fits Header Graphing in Maxim Image Calibration in Maxim Importing Images into MaxIm Importing Images into Rspec Measuring Magnitude in Maxim Observing with Rigel Photometry in Maxim Producing Color Images Stacking percent error Images Using SpectraSuite Software Using Tablet Applications Using the Rise and Set Calculator on Rigel Wavelength Calibration in Rspec Glossary Kepler's Third Law Significant Figures Percent Error Formula Small-Angle Formula Stellar Parallax Finder Chart Iowa Robotic Telescope Sidebar[Skip] Glossary Index Kepler's Third LawSignificant FiguresPercent Error FormulaSmall-Angle FormulaStellar ParallaxFinder Chart Percent Error Formula When can percent error you calculate results that are aiming for known values, the percent error formula is useful tool for determining the precision of your calculations. The formula is given by: The experimental value is your calculated value, and the theoretical value is your known value. A percentage very close to zero means you are very close to your targeted value, which is good. It is always necessary to understand the cause of the error, such as whether it is due to the imprecision of your equipment, your own estimations, or a mistake in your experiment.Example: The 17th century Danish astronomer, Ole Rømer, observed that the periods of the satellites of Jupiter would appear to fluctuate depending on the distance of Jupiter from Earth. The further away Jupiter was, the longer the satellites would take to appear from behind the planet. In 1676, he determined that this phenomenon was due to the fact that the speed of light was fin
value=0.00012. What is the percentage error? Is it infinite?UpdateCancelAnswer Wiki3 Answers Ratish Saroya, learnerWritten 54w agoPercent error = (Estimated value - Actual value) / Actual value × 100% (in absolute value)Percent error = (Theoretical value - Actual value) / Theoretical value × 100% (in absolute value)*It will be treated as Theoretical value if it is well known, otherwise it is an estimate.In first case % error is 100%and in second, it can not be found i.e. infinite You can say that 50% of 1 is .5, or 20% of 1 is .2but what would be 50% or x% of 0.0 is just a point on number line, whereas other numbers are intervals, from 0 to that number, when we talk in sense of %age.795 Views · Answer requested by 1 personRelated QuestionsMore Answers BelowIs 1/0 infinity?Division by Zero: If 1/1 equals 1, 2/2 equals 1, and 3/3 equals 1, then what does 0/0 equal?Why do scientists consider (infinite/infinite) an undefined value?Are there any practical application for mean value theorem?Is 0×0 a finite value? Subhajit Das, Learning the ways of a grown up lifeWritten 54w agoNo, the percentage error is 0.504 Views · Answer requested by 1 person Howard Shi, 16+ years of mathematics, always interested in learning something newWritten 54w ago0.00012 rounds to 0.00, or just o. Percentage error is 0503 Views · Answer requested by 1 personView More AnswersRelated QuestionsWhat is the practical application of Logarithmic values?What is the value of [math]\dfrac{ ∞}{0}[/math]?Imagine two parallel lines, and you tilt one of them by an infinitely small value (or 0.00000001 degrees) what would happen?What is the value of [math]\dfrac{0}{∞}[/math] ?Why are mathematicians so obsessed with proving conjectures when it is of little practical value?What are the best practical applications of infinite series?Math: how do you find all the values of t so that 10e/\Bt>0?How do I calculate the focal length of a spherical mirror from the following observations: object distance, u = (50.1 ± 0.5) cm, image distanc...How do I calculate the value of 10^0.4 through binomial expansion?How do I quickly derive formula for a continuous linear increasing value function? (normalized [0;1])Why do I always mistake the golden value is 0.618?Is a PhD in theoretical physics more practical compared to one in theoretic