Look up in Wiktionary, the free dictionary.coefficient |

**Coefficient** could have one of the following meanings:

## Mathematics

- A
**coefficient**is a constant multiplication of a function - The term
**differential coefficient**has been mostly displaced by the modern term**derivative**.

## Computing

- In computer arithmetics, the term coefficient (floating point number) is also sometimes used as a synonym for mantissa or significand.

## Probability theory and Statistics

- The
**coefficient of determination**, denotedand pronounced*R*^{2}**R squared**, is the proportion of total variation of outcomes explained by a statistical model. - The
**coefficient of variation**(**CV**) is a normalized measure of dispersion of a probability distribution or frequency distribution. - The
**correlation coefficient**(**Pearson's**) is a measure of the linear correlation (dependence) between two variables.*r*

## Science

- In physics, a
**physical coefficient**is an important number that characterizes some physical property of an object. - In chemistry, a
**stoichiometric coefficient**is a number placed in front of a term in a chemical equation to indicate how many molecules (or atoms) take part in the reaction.

## Other

- UEFA coefficient, used by the governing body for association football in Europe to calculate ranking points for its member clubs and national federations
- The
**Coefficients**were an Edwardian London dining club.

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