In mathematics, a coefficient is a multiplicative factor involved in some term of a polynomial, a series, or an expression. It may be a number (dimensionless)...

In economics, the Gini coefficient (/ˈdʒiːni/ JEE-nee), also known as the Gini index or Gini ratio, is a measure of statistical dispersion intended to...

In European football, the UEFA coefficients are statistics based in weighted arithmetic means used for ranking and seeding teams in club and international...

In statistics, the Pearson correlation coefficient (PCC) is a correlation coefficient that measures linear correlation between two sets of data. It is...

In fluid dynamics, the drag coefficient (commonly denoted as: c d {\displaystyle c_{\mathrm {d} }} , c x {\displaystyle c_{x}} or c w {\displaystyle c_{\rm...

Extinction coefficient refers to several different measures of the absorption of light in a medium: Attenuation coefficient, sometimes called "extinction...

the binomial coefficients are the positive integers that occur as coefficients in the binomial theorem. Commonly, a binomial coefficient is indexed by...

A correlation coefficient is a numerical measure of some type of linear correlation, meaning a statistical relationship between two variables. The variables...

In probability theory and statistics, the coefficient of variation (CV), also known as normalized root-mean-square deviation (NRMSD), percent RMS, and...

pavement has a high coefficient of friction. Coefficients of friction range from near zero to greater than one. The coefficient of friction between two...

The coefficient of performance or COP (sometimes CP or CoP) of a heat pump, refrigerator or air conditioning system is a ratio of useful heating or cooling...

The coefficient of relationship is a measure of the degree of consanguinity (or biological relationship) between two individuals. The term coefficient of...

Coupling coefficient, or coupling factor, may refer to: Electromechanical coupling coefficient Coupling coefficient (inductors), or coupling factor, between...

The linear attenuation coefficient, attenuation coefficient, or narrow-beam attenuation coefficient characterizes how easily a volume of material can be...

In physics and electrical engineering the reflection coefficient is a parameter that describes how much of a wave is reflected by an impedance discontinuity...

In thermodynamics, the heat transfer coefficient or film coefficient, or film effectiveness, is the proportionality constant between the heat flux and...

strain) divided by the change in temperature is called the material's coefficient of linear thermal expansion and generally varies with temperature. As...

In statistics, the coefficient of determination, denoted R2 or r2 and pronounced "R squared", is the proportion of the variation in the dependent variable...

In the physical sciences, a partition coefficient (P) or distribution coefficient (D) is the ratio of concentrations of a compound in a mixture of two...

The Seebeck coefficient (also known as thermopower, thermoelectric power, and thermoelectric sensitivity) of a material is a measure of the magnitude...

In statistics, Spearman's rank correlation coefficient or Spearman's ρ, named after Charles Spearman and often denoted by the Greek letter ρ {\displaystyle...

In statistics, the phi coefficient (or mean square contingency coefficient and denoted by φ or rφ) is a measure of association for two binary variables...

Diffusivity, mass diffusivity or diffusion coefficient is usually written as the proportionality constant between the molar flux due to molecular diffusion...

A temperature coefficient describes the relative change of a physical property that is associated with a given change in temperature. For a property R...

In statistics, the uncertainty coefficient, also called proficiency, entropy coefficient or Theil's U, is a measure of nominal association. It was first...

The Jaccard index, also known as the Jaccard similarity coefficient, is a statistic used for gauging the similarity and diversity of sample sets. It was...

Look up coefficient in Wiktionary, the free dictionary. Coefficient could have one of the following meanings: A coefficient is a constant multiplication...

{\displaystyle \rho _{T}} ) or coefficient alpha (coefficient α {\displaystyle \alpha } ), is a reliability coefficient and a measure of the internal consistency...

product-moment correlation coefficient (PPMCC), or "Pearson's correlation coefficient", commonly called simply "the correlation coefficient". It is obtained by...

expansion is quantified by the Joule–Thomson coefficient, μ J T {\displaystyle \mu _{\mathrm {JT} }} . This coefficient may be either positive (corresponding...