in mathematics, a variable for which the range of possible values identifies a collection of distinct cases in a problem. Any equation expressed in terms of parameters is a parametric equation. The general equation of a straight line in slope-intercept form, y = mx + b, in which m and b are parameters, is an example of a parametric equation. When values are assigned to the parameters, such as the slope m = 2 and the y-intercept b = 3, and substitution is made, the resulting equation, y = 2x + 3, is that of a specific straight line and is no longer parametric. In statistics, the parameter in a function is the variable sought by means of evidence from samples. The resulting assigned value is the estimate, or statistic.
Meaning of PARAMETER in English
Britannica English vocabulary. Английский словарь Британика. 2012