- 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.
- A constant in an algebraic equation, as opposed to a variable. For instance, in the expression 3x, 3 is the coefficient, and x is the variable.
- A numerical measure that describes a physical or chemical property, and that is a constant under specified conditions. For instance, a coefficient of attenuation or of thermal expansion.
(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.