A coefficient is a number that expresses a measurement of a particular quality of a substance or object under specified conditions.
[technical]
...production coefficients.
A coefficient of one means the markets move perfectly in step.
coefficient in British English
(ˌkəʊɪˈfɪʃənt)
noun
1. mathematics
a.
a numerical or constant factor in an algebraic term
the coefficient of the term 3xyz is 3
b.
the product of all the factors of a term excluding one or more specified variables
the coefficient of x in 3axyz is 3ayz
2. physics
a value that relates one physical quantity to another
Word origin
C17: from New Latin coefficiēns, from Latin co- together + efficere to effect
coefficient in American English
(ˌkoʊəˈfɪʃənt)
noun
1.
a factor that contributes to produce a result
2. Ancient Mathematics
a number or algebraic symbol prefixed as a multiplier to a variable or unknown quantity (Ex.: x in x(y+z), 6 in 6ab)
3. Physics
a number, constant for a given substance, used as a multiplier in measuring the change in some property of the substance under given conditions
the coefficient of expansion
Word origin
co- + efficient: orig. an adj. meaning “cooperating”
All related terms of 'coefficient'
beta coefficient
a measure of the extent to which a particular security rises or falls in value in response to market movements
drag coefficient
a measure of the drag of an object in a moving fluid , esp air
binomial coefficient
any of the numerical factors which multiply the successive terms in a binomial expansion ; any term of the form n !/( n– k )! k !: written ( nk ), nCk , or Cnk
coupling coefficient
The coupling coefficient of a pair of coils is a measure of the magnetic effect passing between them.
diffusion coefficient
the rate at which a diffusing substance is transported between opposite faces of a unit cube of a system when there is unit concentration difference between them
partition coefficient
the ratio of the concentrations of a substance in two heterogenous phases in equilibrium with each other
correlation coefficient
a statistic measuring the degree of correlation between two variables as by dividing their covariance by the square root of the product of their variances . The closer the correlation coefficient is to 1 or –1 the greater the correlation; if it is random , the coefficient is zero
differential coefficient
→ derivative (sense 8 )
permeability coefficient
the volume of an incompressible fluid that will flow in unit time through a unit cube of a porous substance across which a unit pressure difference is maintained
coefficient of expansion
the amount of expansion (or contraction ) per unit length of a material resulting from one degree change in temperature
coefficient of friction
the force required to move two sliding surfaces over each other, divided by the force holding them together. It is reduced once the motion has started
coefficient of variation
a measure of the relative variation of distribution independent of the units of measurement ; the standard deviation divided by the mean , sometimes expressed as a percentage
coefficient of viscosity
the measure of the viscosity of a fluid , equal to the force per unit area required to maintain a difference of velocity of one unit distance per unit time between two parallel planes in the fluid that lie in the direction of flow and are separated by one unit distance: usually expressed in poise or centipoise
coefficient of mutual induction
the production of an electromotive force in a circuit by a current change in a second circuit magnetically linked to the first
coefficient of self-induction
the production of an electromotive force in a circuit when the magnetic flux linked with the circuit changes as a result of a change in current in the same circuit
Pearson's correlation coefficient
a statistic measuring the linear relationship between two variables in a sample and used as an estimate of the correlation in the whole population , given by r = Cov ( X , Y ) /√ [( Var ( X ) .Var ( Y )]
Spearman's rank-order coefficient
a statistic measuring the extent to which two sets of discrete data place the distinct items in the same order, given by r S = 1 – 6 Σ d 2 /n ( n 2 – 1 ), where Σ d 2 is the sum of the squares of the differences of ranks between the two orderings and n is the number of items in each
Spearman's rank-order correlation coefficient
a statistic measuring the extent to which two sets of discrete data place the distinct items in the same order, given by r S = 1 – 6 Σ d 2 /n ( n 2 – 1 ), where Σ d 2 is the sum of the squares of the differences of ranks between the two orderings and n is the number of items in each
Pearson's product moment correlation coefficient
a statistic measuring the linear relationship between two variables in a sample and used as an estimate of the correlation in the whole population , given by r = Cov ( X , Y ) /√ [( Var ( X ) .Var ( Y )]
L12
mutual inductance
mutual inductance
a measure of the mutual induction between two magnetically linked circuits , given as the ratio of the induced electromotive force to the rate of change of current producing it. It is usually measured in henries
self-inductance
the inherent inductance of a circuit , given by the ratio of the electromotive force produced in the circuit by self-induction to the rate of change of current producing it. It is usually expressed in henries