- noun a mathematical quantity placed before and multiplying another
- A number or symbol multiplied by a variable.
- In a regression analysis, the estimated numerical association between one variable and another, usually taken to represent the sign and size of the causal effect of one on the other.
(written as Coefficient)A value or algebraic expression that expresses the structure of an equation. For example, in the equation y = c + a x + b z, a is the coefficient of x and b is the coefficient of z. c is the constant term.