# Coefficient

A coefficient is a constant multiplier of variables and any part of an algebraic **term**, Thus, in the expression

the possible coefficients for the term 3xy^{2} would include 3, which is the coefficient of xy^{2}, and x, which is the coefficient of 3y^{2}:

has 4 as a coefficient of

Most commonly, however, the word coefficient refers to what is, strictly speaking, the numerical coefficient. Thus, the numerical coefficients of the expression 5xy ^{2} - 3x + 2y - 4-X are considered to be 5, -3, +2, and -4.

In many formulas, especially in **statistics**, certain numbers are considered coefficients, such as correlation coefficients in statistics or the coefficient of expansion in **physics**.

## Additional topics

Science EncyclopediaScience & Philosophy: *Cluster compound* to *Concupiscence*