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55 relations: Accuracy and precision, ASME, Average, Buoyancy, Calibration, Censoring (statistics), Confidence interval, Covariance, Data binning, Dempster–Shafer theory, Detection limit, Displacement (vector), Elastic modulus, Expected value, Experimental uncertainty analysis, Heat capacity, History of measurement, Humidity, International Laboratory Accreditation Cooperation, Interval (mathematics), ISO/IEC 17025, Joint Committee for Guides in Metrology, Joint probability distribution, Linear function, List of uncertainty propagation software, Mass, Mass concentration (chemistry), Mathematical model, Mean, Median, Metrology, Mode (statistics), Monte Carlo method, Normal distribution, Parameter, Partial derivative, Physical constant, Probability box, Probability distribution, Propagation of uncertainty, Quantity, Random variable, Repeatability, Robust statistics, Standard deviation, Statistical dispersion, Student's t-distribution, Temperature, Test method, Uncertainty, ..., Uncertainty quantification, Uniform distribution (continuous), United Kingdom Accreditation Service, Voltage, Volume. Expand index (5 more) »
Accuracy and precision
Precision is a description of random errors, a measure of statistical variability.
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ASME
The American Society of Mechanical Engineers (ASME) is a professional association that, in its own words, "promotes the art, science, and practice of multidisciplinary engineering and allied sciences around the globe" via "continuing education, training and professional development, codes and standards, research, conferences and publications, government relations, and other forms of outreach." ASME is thus an engineering society, a standards organization, a research and development organization, a lobbying organization, a provider of training and education, and a nonprofit organization.
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Average
In colloquial language, an average is a middle or typical number of a list of numbers.
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Buoyancy
In physics, buoyancy or upthrust, is an upward force exerted by a fluid that opposes the weight of an immersed object.
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Calibration
Calibration in measurement technology and metrology is the comparison of measurement values delivered by a device under test with those of a calibration standard of known accuracy.
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Censoring (statistics)
In statistics, engineering, economics, and medical research, censoring is a condition in which the value of a measurement or observation is only partially known.
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Confidence interval
In statistics, a confidence interval (CI) is a type of interval estimate, computed from the statistics of the observed data, that might contain the true value of an unknown population parameter.
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Covariance
In probability theory and statistics, covariance is a measure of the joint variability of two random variables.
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Data binning
Data binning or bucketing is a data pre-processing technique used to reduce the effects of minor observation errors.
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Dempster–Shafer theory
The theory of belief functions, also referred to as evidence theory or Dempster–Shafer theory (DST), is a general framework for reasoning with uncertainty, with understood connections to other frameworks such as probability, possibility and imprecise probability theories.
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Detection limit
In analytical chemistry, the detection limit, lower limit of detection, or LOD (limit of detection), is the lowest quantity of a substance that can be distinguished from the absence of that substance (a blank value) with a stated confidence level (generally 99%).
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Displacement (vector)
A displacement is a vector whose length is the shortest distance from the initial to the final position of a point P. It quantifies both the distance and direction of an imaginary motion along a straight line from the initial position to the final position of the point.
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Elastic modulus
An elastic modulus (also known as modulus of elasticity) is a quantity that measures an object or substance's resistance to being deformed elastically (i.e., non-permanently) when a stress is applied to it.
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Expected value
In probability theory, the expected value of a random variable, intuitively, is the long-run average value of repetitions of the experiment it represents.
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Experimental uncertainty analysis
Experimental uncertainty analysis is a technique that analyses a derived quantity, based on the uncertainties in the experimentally measured quantities that are used in some form of mathematical relationship ("model") to calculate that derived quantity.
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Heat capacity
Heat capacity or thermal capacity is a measurable physical quantity equal to the ratio of the heat added to (or removed from) an object to the resulting temperature change.
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History of measurement
The earliest recorded systems of weights and measures originate in the 3rd or 4th millennium BC.
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Humidity
Humidity is the amount of water vapor present in the air.
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International Laboratory Accreditation Cooperation
The International Laboratory Accreditation Cooperation or ILAC started as a conference in 1977 with the aim of developing international cooperation for facilitating trade by promotion of the acceptance of accredited test and calibration results.
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Interval (mathematics)
In mathematics, a (real) interval is a set of real numbers with the property that any number that lies between two numbers in the set is also included in the set.
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ISO/IEC 17025
ISO/IEC 17025 General requirements for the competence of testing and calibration laboratories is the main ISO standard used by testing and calibration laboratories.
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Joint Committee for Guides in Metrology
The Joint Committee for Guides in Metrology (JCGM), is an organization in Sèvres that prepared the "Guide to the expression of uncertainty in measurement" (GUM) and the "International vocabulary of metrology – basic and general concepts and associated terms" (VIM).
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Joint probability distribution
Given random variables X, Y,..., that are defined on a probability space, the joint probability distribution for X, Y,...
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Linear function
In mathematics, the term linear function refers to two distinct but related notions.
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List of uncertainty propagation software
List of uncertainty propagation software used to perform propagation of uncertainty calculations.
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Mass
Mass is both a property of a physical body and a measure of its resistance to acceleration (a change in its state of motion) when a net force is applied.
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Mass concentration (chemistry)
In chemistry, the mass concentration is defined as the mass of a constituent divided by the volume of the mixture: For a pure chemical the mass concentration equals its density (mass divided by volume); thus the mass concentration of a component in a mixture can be called the density of a component in a mixture.
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Mathematical model
A mathematical model is a description of a system using mathematical concepts and language.
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Mean
In mathematics, mean has several different definitions depending on the context.
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Median
The median is the value separating the higher half of a data sample, a population, or a probability distribution, from the lower half.
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Metrology
Metrology is the science of measurement.
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Mode (statistics)
The mode of a set of data values is the value that appears most often.
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Monte Carlo method
Monte Carlo methods (or Monte Carlo experiments) are a broad class of computational algorithms that rely on repeated random sampling to obtain numerical results.
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Normal distribution
In probability theory, the normal (or Gaussian or Gauss or Laplace–Gauss) distribution is a very common continuous probability distribution.
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Parameter
A parameter (from the Ancient Greek παρά, para: "beside", "subsidiary"; and μέτρον, metron: "measure"), generally, is any characteristic that can help in defining or classifying a particular system (meaning an event, project, object, situation, etc.). That is, a parameter is an element of a system that is useful, or critical, when identifying the system, or when evaluating its performance, status, condition, etc.
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Partial derivative
In mathematics, a partial derivative of a function of several variables is its derivative with respect to one of those variables, with the others held constant (as opposed to the total derivative, in which all variables are allowed to vary).
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Physical constant
A physical constant, sometimes fundamental physical constant or universal constant, is a physical quantity that is generally believed to be both universal in nature and have constant value in time.
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Probability box
A probability box (or p-box) is a characterization of an uncertain number consisting of both aleatoric and epistemic uncertainties that is often used in risk analysis or quantitative uncertainty modeling where numerical calculations must be performed.
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Probability distribution
In probability theory and statistics, a probability distribution is a mathematical function that provides the probabilities of occurrence of different possible outcomes in an experiment.
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Propagation of uncertainty
In statistics, propagation of uncertainty (or propagation of error) is the effect of variables' uncertainties (or errors, more specifically random errors) on the uncertainty of a function based on them.
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Quantity
Quantity is a property that can exist as a multitude or magnitude.
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Random variable
In probability and statistics, a random variable, random quantity, aleatory variable, or stochastic variable is a variable whose possible values are outcomes of a random phenomenon.
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Repeatability
Repeatability or test–retest reliability is the closeness of the agreement between the results of successive measurements of the same measurand carried out under the same conditions of measurement.
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Robust statistics
Robust statistics are statistics with good performance for data drawn from a wide range of probability distributions, especially for distributions that are not normal.
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Standard deviation
In statistics, the standard deviation (SD, also represented by the Greek letter sigma σ or the Latin letter s) is a measure that is used to quantify the amount of variation or dispersion of a set of data values.
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Statistical dispersion
In statistics, dispersion (also called variability, scatter, or spread) is the extent to which a distribution is stretched or squeezed.
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Student's t-distribution
In probability and statistics, Student's t-distribution (or simply the t-distribution) is any member of a family of continuous probability distributions that arises when estimating the mean of a normally distributed population in situations where the sample size is small and population standard deviation is unknown.
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Temperature
Temperature is a physical quantity expressing hot and cold.
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Test method
A test method is a method for a test in science or engineering, such as a physical test, chemical test, or statistical test.
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Uncertainty
Uncertainty has been called "an unintelligible expression without a straightforward description".
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Uncertainty quantification
Uncertainty quantification (UQ) is the science of quantitative characterization and reduction of uncertainties in both computational and real world applications.
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Uniform distribution (continuous)
In probability theory and statistics, the continuous uniform distribution or rectangular distribution is a family of symmetric probability distributions such that for each member of the family, all intervals of the same length on the distribution's support are equally probable.
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United Kingdom Accreditation Service
The United Kingdom Accreditation Service (UKAS) is the sole national accreditation body recognised by the British government to assess the competence of organisations that provide certification, testing, inspection and calibration services.
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Voltage
Voltage, electric potential difference, electric pressure or electric tension (formally denoted or, but more often simply as V or U, for instance in the context of Ohm's or Kirchhoff's circuit laws) is the difference in electric potential between two points.
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Volume
Volume is the quantity of three-dimensional space enclosed by a closed surface, for example, the space that a substance (solid, liquid, gas, or plasma) or shape occupies or contains.
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References
[1] https://en.wikipedia.org/wiki/Measurement_uncertainty
